TerraLiner:12 m Globally Mobile Beach House/Class-A Crossover w 6x6 Hybrid Drivetrain

biotect

Designer
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Pezii

New member
HI everyone

I liked all Kat, but my favorite is this one

exp motorhome.jpg

I found this beauty somewhere on the Internet, was hard to find some information ! What I found was an Kat, very old, with full integrated Cabin, how they get to the machine I really don´t know. They replaced the original front window with one bigger screen ! The KAT has an Pop off (it´s an pop out on the roof side ) too !

I really like the "hole" in one thing. Have somebody seen this ? Perhaps some more infos ?
 

biotect

Designer
[Sorry, Pezii, but I will need a few more pages, and will have to "go around" your post with this series on the HX/SX. Will answer your query below, after the last post in this series.]

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But again, like its larger 6x6 and 8x8 cousins, the HX-60 4x4 serves mostly as an off-road-capable "payload delivery" truck:

hx_8886.jpg HX60 General Service.jpg Millitär_Fahrzeug_MAN.jpg
Rheinmetall_MAN_Military_Vehicle_4x4_South_Africa_defence_industry_AAD_2012_001.jpgman_hx77_l3.jpg truck-platform-MAN-HX-32-440-CARGO-VEHICLE-2008-L042514---1_big--13091202442672192500.jpg


Here are some “UN-ready” versions, painted white:


hx_8899.jpg Rheinmetall-HX2-729x486-f44e0033752257f9.jpg Rheinmetall-HX2-729x486-9d5a13753a200d3d.jpg


And here is an SX-44 6x6 serving as a U.N. vehicle:


684x475_SX-32.440-6x6.jpg


An SX-44, because the tire is mounted lengthwise, instead of transversally...:)


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biotect

Designer
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9. Size Considerations


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In short, not all MAN HX and SX vehicles are 8x8 and huge. Many (and perhaps even most?) of those in service are 6x6 and 4x4.

Of course, for the purposes of this thread, the HX-60 4x4 is as bit academic, because what's wanted is the rigid, torsion-free box-frame and progressive coil suspension of the SX series. And the SX only comes in 6x6 and 8x8 versions. See the bottom of the page 26, at http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page26, for further discussion. What's really wanted is an SX-44 6x6 variant like the U.N. truck immediately above.

Now although an expedition vehicle based on an SX-44 6x6 chassis would not be small, it would not exactly be huge either. For instance egn’sBlue Thunder”, a MAN-KAT 6x6, is 9.3 m long – see http://www.expeditionportal.com/forum/threads/11614-MAN-6x6-camper , http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/20933867/srt/pa/pging/1/page/1.cfm , http://www.enfatec.de/index.php?id=54 , http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page25 . This may seem very large for an expedition motorhome, but it would still be considered "small" when compared to the wider world of German "Liner"-class motorhomes, or American Class-As. German "Liner” motorhomes are typically 9 - 12 m long, and American Class-A motorhomes are considered “small” if they are 35 feet long (10.67 m), “medium-sized” if they are 41 feet long (12.5 m), and only truly “large” if they are 45 feet long (13.71 m). But even if they are 45 feet long, it seems that American Class-A motorhomes still manage to find campsite spaces in most North American natural parks, for instance.

There are literally hundreds of webpages that discuss the pros and cons of different sizes and types of mainstream motorhomes – see for instance http://changingears.com/rv-checklist-rv-types.shtml?sec-learn , http://www.rvbeachbum.com/types-of-rv.html , http://www.your-rv-lifestyle.com/motorhome-versus-fifth-wheel.html , http://www.campingroadtrip.com/tips-and-articles/what-type-of-rv-is-right-for-you , http://www.familiesontheroad.com/resources/choosingRV.html , http://www.familiesontheroad.com/resources/buyingRV.html , http://technosyncratic.com/2011/05/16/rv-pros-cons/ , http://www.technomadia.com/excuses/ , http://www.technomadia.com/2012/02/family-aspects-of-a-nomadic-lifestyle/ , and http://www.rvlifestyleexperts.com/free-rv-info/getting-started/rving-the-long-and-the-short-of-it/ . But what seems to come up again and again, is that if one really intends to use the motorhome full-time, as one’s primary residence, then bigger really is better, even if this means coping with the parking and drivability issues that beset larger vehicles. The following is a statement by the owner of a Class-A who lives in their motorhome full-time:

"Pack light! We've lightened our load a dozen times so far, and are still trying to streamline even more. But don't cut necessities - if you love your toaster, keep it. Don't skimp so much you're miserable - this is not camping, it's living, and even though they call them "recreational vehicles, " this is life, not a vacation. You'll need more than you think and less than you think all at the same time." See http://www.familiesontheroad.com/resources/choosingRV.html.

In the world of mainstream RV's, those who have large Class-A motorhomes for full-timing typically get around the drivability problem by towing a car, “dinghy”, or “toad” – see http://www.motorhome.com/rv-how-to/dinghy-towing-guide/dinghy-towing-fever/ , http://www.motorhome.com/rv-travel-news/its-dinghy-time/ , http://www.motorhome.com/rv-how-to/dinghy-towing-guide/dinghy-towing-basics/ , http://www.motorhome.com/rv-reviews/motorhome-reviews/dinghy-towing-ranger-fx4level-ii/ , http://www.examiner.com/article/rv-101-flat-towing-checklist-for-your-toad-vehicle , [video]http://dinghytowing.rvtravel.com/2012/01/dinghy-towing-guide-for-2012-available.html[/video] , http://roadmasterinc.com/index.php , and http://roadmasterinc.com/products/towbars/all_terrain.html :


tow518.jpg DSC00231(1).jpg mh-tow-front.jpg


Recall that Peter Thompson did the same with Mañana, his fully integrated “all-road” motorhome, 35 feet long, or 10.74 m – see http://www.thompsons.au.com/motorhome/ , http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page21 , and http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page22 . Mañana towed a Jeep 2001 Wrangler/Renegade hardtop:


motorhome1.jpg

jeep1.jpg

motorhome2.jpg

jeep2.jpg

jeep3.jpg


But of course other options exist, like carrying a motorbike in back, or a small 4x4 dune buggy, as per Jago Pickering’s Tatra 6x6 – see http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page25 .


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biotect

Designer
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10. Conclusion


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The "HX" and "SX" designations simply indicate a family of trucks. Many (or perhaps even most?) HX-series vehicles in service are not 8x8. And even where the more robust SX-45 8x8 trucks are concerned, the majority are not 3.0 m wide missile carriers.

Some who commented in this thread did not seem to be aware of such distinctions, so if the previous "Photo Essay" and this "HX/SX Gallery" succeed in dispelling misconceptions, they will have served their purpose.

My best guess is that the misconception arises because Americans seem to have a tendency to cognitively equate MAN-KATs with Oshkosh HEMMTs. When Americans think of the MAN-KAT, they seem to think of a very big missile platform, akin to a big 8x8 or 10x10 Oshkosh. But as addressed in another ExPo thread, the Oshkosh HEMMT is not really suitable as an off-road vehicle, especially if one is traveling alone and not in convoy -- see http://www.expeditionportal.com/forum/threads/48137-Hemtt-Define-America-Project . Furthermore, the "Heavy Tactical Vehicles" produced by Oshkosh, trucks that are all more or less variations of the HEMMT, seem to be available only in 8x8 and 10x10 formats -- see http://oshkoshdefense.com/products/heavy-tactical-vehicles/ , http://oshkoshdefense.com/vehicles/hemtt-a3-diesel-electric/ , http://oshkoshdefense.com/vehicles/hemtt-a4/ , http://oshkoshdefense.com/vehicles/lvsr/ , and http://oshkoshdefense.com/vehicles/pls/ . For smaller 4x4 and 6x6 Oshkosh trucks one has to turn to the FMTV and MTVR series -- see http://oshkoshdefense.com/vehicles/fmtv/ and http://oshkoshdefense.com/vehicles/mtvr/ . The latter are not exactly household names, even in the overlanding community. And as near as I can tell American fabricators like Earthroamer, GXV, and Tiger have not explored the possibility of mounting their campers on 6x6 FMTVs or MTVRs.

So the train of thought seems to run something like the following:

HEMMT = MAN-KAT = 8x8 = not suitable for off-road use, except in convoy

Some do not seem to realize that 6x6 MAN-KAT variants have always existed (egn's Blue Thunder is based on one), or that the SX-44 6x6 exists, as well as the HX-58 6x6 and HX-60 4x4. Rheinmetall-MAN describes all of these HX-series and SX-series trucks, as members of a single HX/SX "truck family". Whereas Oshkosh separates out its more medium-sized trucks as the separate and distinct FMTV and MTVR series. So perhaps it's understandable that when one talks about a MAN SX truck, many will simply assume that one is talking about an 8x8, and not a 6x6.

In any case, this thread's main focus has been and will continue to be on the MAN SX-44 6x6 chassis, and the Tatra 815 or Phoenix equivalent, and not on MAN or Tatra 8x8 chassis. I am even tempted to drop the "8x8" from the thread title because it is misleading. But I won't do so because, as egn has suggested, for better weight distribution across the axles the best solution might be to purchase an 8x8 chassis and chop off the fourth axle -- see http://www.expeditionportal.com/for...rsion-Free-Frame/page14?p=1568336#post1568336.

Long-time participants on ExPo and experienced overlanders no doubt already know all of the above, and did not need these pages of clarification. So my apologies if these pages struck veterans as mere statements of the obvious. But for new participants, or for those less familiar with the European secondary market for ex-military MAN-KAT trucks, and the wide variety of European off-road motorhomes now being constructed on the same, I hope these pages shed some light on some complicated and often confusing territory.

Of course many Germans reading this will think, “Why the need for such a detailed explanation?” If one is German, one grows up seeing MAN-KAT and HX/SX trucks driving on roads. Furthermore, given that most German men served a mandatory 6 - 10 months in the military, most will have seen MAN-KATs there -- see http://en.wikipedia.org/wiki/Conscription_in_Germany . But in North America MAN-KATs are virtually non-existent, and so it's natural that when many Americans imagine such trucks, they immediately think of an 8x8 missile carriers. Sure, those who are very well-travelled or who know something about military matters will have a more nuanced understanding of the MAN-KAT and HX/SX. But one suspects that even within the American overlanding community, the understanding of MAN military trucks won't be nearly as deep as the understanding of German MAN-KAT owners of the kind who egn regularly meets at get-togethers, and who participate on http://www.kat-forum.de .

All best wishes,



Biotect


PS -- egn, this is your area of expertise. So if I have made any mistakes anywhere in the "Photo Essay" or the "HX/SX Gallery", with regard to either text or imagery, please let me know!


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biotect

Designer
I liked all Kat, but my favorite is this one

View attachment 228420

I found this beauty somewhere on the Internet, was hard to find some information ! What I found was an Kat, very old, with full integrated Cabin, how they get to the machine I really don´t know. They replaced the original front window with one bigger screen ! The KAT has an Pop off (it´s an pop out on the roof side ) too !

I really like the "hole" in one thing. Have somebody seen this ? Perhaps some more infos ?


Hi Pezii,

This is actually one of the first UniCats ever built, although it is not officially shown on the UniCat website.

The MAN-KAT chassis on which it was built started out as a support truck for the Paris-Capetown Rally, often described as "Paris-Dakar 1992" – see http://en.wikipedia.org/wiki/1992_Paris–Cape_Town_Rally , http://en.wikipedia.org/wiki/1992_Dakar_Rally , http://en.wikipedia.org/wiki/Dakar_Rally , http://www.dakar.com/dakar/2012/us/history.html , http://www.rssp.eu/downloads/dakar/1992.pdf , http://www.dakar.com/2011/DAK/presentation/docs/historique-dakar-1979-2009_us.pdf , http://www.popularmechanics.com/car...he-worlds-10-longest-auto-races?click=main_sr , http://www.popularmechanics.com/cars/news/vintage-speed/the-worlds-10-longest-auto-races-4#slide-4 .

This was a very special Dakar, the only Paris-to-Capetown rally in the series, so thought I'd go briefly off-topic and indulge with a bit of video footage of the same:


[video=youtube;tht5CwdznZA]http://www.youtube.com/watch?v=tht5CwdznZA&index=3&list=PL04819CB5745E4CE 7[/video] [video=dailymotion;x8sjj7]http://www.dailymotion.com/video/x8sjj7_es-dakar-1992_auto[/video]


Also see the YouTube playlists at http://www.youtube.com/playlist?list=PLDE5BB214CB30490C and http://www.youtube.com/playlist?list=PL04819CB5745E4CE7 . After 1992, Dakar went back to routes in North Africa. And then, after Dakar 2008 was cancelled, it was decided that North Africa had become too dangerous, and in 2009 Dakar moved to South America where it has taken place ever since.

So a MAN-KAT support truck used in the Paris-Capetown 1992 Dakar rally was bought by a guy afterwards, who had Unicat convert it into the camper whose image you just posted. Apparently he did not use it much, and more recently this integrated off-road motorhome was bought by a Saudi Arabian, who redid the whole truck.

You can see a few more pictures of the same vehicle at the beginning of this thread, at http://www.expeditionportal.com/for...-8x8-Expedition-RV-w-Rigid-Torsion-Free-Frame . And here is one more picture in addition, that I did not post at the beginning of the thread, because of the 10-image-per-post limit:


lsw3.jpg


Like you, I came across images of this vehicle on the Internet. First, there is a really interesting French thread titled "Bus 4x4 6x6", which contains lots of images of larger, integrated off-road buses and motorhomes -- see http://forum.bernard.debucquoi.com/viewtopic.php?f=11&t=4833&start=60 . In many respects the concerns of that French thread are the same as the concerns of this thread here on ExPo. Additional images I found on a German forum, in a thread dedicated to UniCat discussion, at http://www.offroad-forum.de/viewtopic.php?t=34729&sid=91a66bb976992decba7125d6f2458c30 .

Where did you come across your image?

If you like, please feel free to post more pictures and information about this integrated UniCat in this thread, along with web-links. It's an interesting vehicle, and very relevant to this thread's main concerns.

All best wishes,



Biotect
 
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Pezii

New member
Hej Biotect,

thanks with so much information ...
I found only a few picture a long time ago, and I already planing my dream Offroad Camper and I´m still learning. I liked the design of that KAT ! Infect I contacted Unicat and they gave me only a small response, where the responding guy told me that he works for 8 Years for Unicat, and he don´t think this is an Production of the company ! But he was nice and told me that this will not be for shure...

So after a lot of research, and if I will win a lot of money, perhaps I will realise my dream with unicat or Bischhoff & Scheck !
This is an german company which builds vehicles for the support of the racing sport. I like the inside and outside design ...
http://www.bischoff-scheck.de/de/leistungen/offroad_truck.htm

Perhaps you all already know this company...

Thanks again for the information, I will now read through the forum, because I ´m net here, and I already found so much interesting articles ....

I will post later a few pics, I´m going to the off road expo "Abenteuer Allrad" in Germany at the end of june...
 

mog

Kodiak Buckaroo
Not a 6x6 or 8x8 but it looks like Iveco will build one on their 4x4 platform.
Photo from the Brisbane Iveco Open Day via John's post HERE
iveco-bus.jpg
 

biotect

Designer
Hi Mog,

Seems like this might be the same as “Tonto 4” mining bus sold by the Australian company that goes by various names such as "Autobus", "Bus 4x4", or "4x4 Motorhomes" (take your pick; same company):




If it is, then it's based on an Iveco Eurocargo ML150 4x4 chassis – see http://www.autobus.com.au , http://www.autobus.com.au/vehicles , http://www.autobus.com.au/vehicles/iveco-tonto4/standard , http://www.autobus.com.au/vehicles/iveco-tonto6/standard , http://www.autobus.com.au/media/pdfs/abc-mag/abc-mag-2.pdf , http://quality-bus.com/pdf/Tonto_New.pdf , https://www.bus4x4.com.au , http://www.bus4x4.com.au/vehicles , http://www.bus4x4.com.au/vehicles/iveco-tonto4/standard , http://www.bus4x4.com.au/vehicles/iveco-tonto6/standard , https://www.bus4x4.com.au/media/pdfs/vehicle-range/range-overview.pdf , https://www.bus4x4.com.au/media/pdfs/vehicle-range/range-4x4motorhome.pdf , https://www.bus4x4.com.au/media/pdfs/vehicle-range/range-toyota.pdf , http://www.4x4motorhomes.com.au , http://www.4x4motorhomes.com.au/about-us , http://www.4x4motorhomes.com.au/vehicles , http://www.4x4motorhomes.com.au/vehicles/toyota-coaster/motorhome-build , http://www.4x4motorhomes.com.au/media/wysiwyg/gallery/index.html , http://www.outbacktravelaustralia.com.au/buyers-guide-4x4-campervan/bus-4x4-coaster-4wd-campervan , http://www.iveco.com/en-us/press-room/kit/Pages/Trakker_ar_detail.aspx , http://www.4x4motorhomes.com.au/media/wysiwyg/motorhome/index.html , and http://www.thompsons.au.com/motorhome/ .

But things are even more complicated, because it seems that the Australian company only distributes the Tonto. The initial concept of the Tonto seems to have been a joint-venture between Iveco Australia and "Quality Bus & Coach", a bus manufacturer in Malaysia. In an earlier post in the thread, Joe suggested that the design work was done in Queensland, perhaps by Iveco Australia based there. Iveco manufacturers the chassis, and Quality Bus & Coach manufacturers the shell – see http://quality-bus.com , http://site.quality-bus.com/main/4090/index.asp?pageid=124938 , http://site.quality-bus.com/main/4090/index.asp?pageid=126248 , and http://quality-bus.com/pdf/Tonto_New.pdf . For further discussion, see http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page21 , near the top of the page.

Now it would really be interesting to know how Quality Bus & Coach attaches the bus shell to the Iveco chassis. In light of Peter Thompson’s remarks about Mañana, and the moderate internal damage that it suffered, I am now very curious to know how Quality Bus & Coach avoids the same problems -- see the photographs of Mañana just above, and see http://www.thompsons.au.com/motorhome/, http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page21 , and http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page22 for more information. Mañana was built on top of a fairly standard sort of MAN commercial truck chassis that was not strengthened or made more rigid, and so presumably could still flex a bit.

I've researched IVECO, and there is nothing on Iveco's website that describes or characterizes the Eurocargo ML150 4x4's frame as particularly stiff or rigid -- see http://www.iveco.com.au/index.php/off-road/eurocargo-4x4/eurocargo-range and http://www.iveco.com.au/index.php/off-road/eurocargo-4x4/eurocargo-4x4-frame-suspension , http://web.iveco.com/finland/collec..._Euro_5_EEV/55S17W_Chassis_Cab_Euro_5_EEV.pdf . Sure, if the following video is anything to go by, the chassis does seem to be reasonably rigid, although one detects it flexing a few times:


[video=youtube;3FDXjWiIxTc]https://www.youtube.com/watch?v=3FDXjWiIxTc [/video]


And also granted, lots of Iveco 4x4 Daily trucks will mount campers immediately behind the cab, in designs that seem fully integrated. If the chassis frame of the Iveco 4x4 Daily were to flex a great deal, those integrated camper designs would be in trouble. The following video demonstrates the gist of this:


[video=youtube;7fln45EpMkY]https://www.youtube.com/watch?v=7fln45EpMkY&feature=player_embedded [/video]


But it's one thing to make a short, rigid, more or less torsion-free frame for an Iveco 4x4 Daily. It's another to make a rigid, torsion-free frame for an Iveco Eurocargo ML150 4x4. And it's yet another to make a long, rigid, torsion-free frame for an Iveco 6x6 Trakker. Quality Bus & Coach seems to be developing a 6x6 version of the Tonto, based on the Trakker:


1.jpg tonto6-motorhome.jpg


But here too, the Trakker 6x6 chassis frame does not seem to be exceptionally rigid, and is not advertised as such by Iveco -- see http://www.iveco.com.au , http://www.iveco.com.au/index.php/off-road , http://www.iveco.com.au/index.php/off-road/trakker , and http://www.iveco.com.au/index.php/off-road/trakker/trakker-frame-suspension .

So it's a bit of a mystery how the Tonto's integrated bus-shell attaches to either of these Iveco chassis, 4x4 and 6x6. If the Iveco chassis-frames are still somewhat flexible, as per most truck-frames, then eventually the Tonto shell would seem prone to suffer the same problems as Mr. Thompson’s Mañana.

The Tonto could only avoid such problems if either:

(a) The IVECO chassis were deliberately “upgraded” to be more stiff and torsion-free. See for instance http://www.howardporter.com.au/rigid-truck-bodies .

or

(b) The Tonto shell were mounted on a secondary pivoting sub-frame

Note that the "mining buses" featured on Iveco Australia's own website seem to be not nearly as capable as the Tonto, and are only 4x2 and 6x2 -- see http://www.iveco.com.au/index.php/bus-coach/mining and http://www.iveco.com.au/index.php/bus-coach/mining/delta-eurorider .


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If you are in Australia, and if you are in contact with either Iveco or Autobus/4x4 Motorhomes, it would be great if you could ask them how they pull it off. I've been meaning to write an email to the three companies involved -- Iveco, Quality Bus & Coach, and Autobus/4x4 Motorhomes -- but just haven't gotten around to it yet.

Thanks for posting this, and all best wishes,



Biotect
 
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biotect

Designer
egn,

Well, finally finished two extended series on the Rheinmetall-MAN HX/SX series of trucks, the first of which I called a “Photo-Essay”, and the second a “Gallery”. They are on pages 25, 26, 27, and 28 of the thread, beginning at the bottom of page 25 at http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page25 .

I wrote those pages mainly because many people in North America do not seem to know what a MAN-KAT actually is, and they seem to know even less about the Rheinmetall-MAN HX and SX series. If one is German, then one grows up seeing MAN-KATs driving on roads. And given that most German men served in the military for 6 - 10 months when they were young, most German men will have seen them there. But in North America MAN-KATs are virtually non-existent, so when Americans imagine what they must be like, many immediately think of an 8x8 missile carrier. It then seemed important to do a write-up and gallery, explaining the truck series for some of the younger or less experienced participants on ExPo.

Now if you have the time, and if you are interested, it would be great if you could answer some of the questions that emerged as in the course of writing those pages. The following provides a summary of those questions:


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HX, SX, and MAN-KAT QUESTIONS


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1. The British currently have over 7,000 RMMV (Rheinmetall-MAN) vehicles in service, most of which are HX trucks. About 600 of those trucks are HX-58, and fewer than 200 are SX-44. I am not sure how many SX-45 trucks the British purchased (mostly as recovery vehicles), but it’s probably a low number. If you know the number of for British SX-45s in service, that would be great. But I am more interested in what the German numbers might be.

So, how many HX and SX vehicles would you estimate are in service in Germany right now, with the German Army and Air-Force? And how many older MAN-KATs are still in service? Apparently, MAN sold over 14,000 MAN-KAT trucks to the German armed forces up to 1984, and thousands more were exported abroad – see http://www.military-today.com/trucks/man_kat1_8x8.htm . But that was 30 years ago, and who know how many thousands more have been sold since then?

Furthermore, I get the impression that the GTF – the Geshützte Transportfahrzeuge program – moves very slowly, and that old MAN-KATs are just as likely to be replaced by new Actros or Zetros trucks, as they are to be replaced by HX or SX series trucks. Is this true?

Out of the German Army and Air-Force totals, how many trucks would you estimate are truly SX-series? And within that number, how many would you estimate are SX-45, and how many SX-44? And finally, how many of the “top-tier” MAN-KAT A1s are still used by the German armed forces, i.e. the MAN-KATs of the most advanced kind, that were in production before the name changed to “SX”, with the third-generation series of “gl” trucks?

Has Germany also been purchasing thousands of HX-series trucks, like Britain?

Don’t worry, I am not looking for exact figures here, just very rough, rounded, “ball-park” sort of numbers. You are a key member of the MAN-KAT community in Germany, so I figured that if anyone might know some of these figures off the top of his head, it might be you....:)


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2. In the United States, only 12 HEMTTs are registered for civilian use – see the “Hemtt Define America Project” thread, at http://www.expeditionportal.com/forum/threads/48137-Hemtt-Define-America-Project/page3 :

Currently there are about 12 HEMMT that are tagged and certified for civilian use.

Whereas there seem to be many, many more second-hand, used MAN-KATs repurposed for civilian use driving on European roads.

How many civilian MAN-KATs would you estimate are currently on the road in Germany? And in Europe as a whole?


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3. On page 26 I wrote that it might be very difficult to find a second-hand, ex-military SX-series truck in Germany – see or http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page26 :

I tried researching comparative deployment in Germany versus the UK, but came up short. The only "hard" number for the German armed forces that I found was 14,000, which is the total number of MAN-KATs that were delivered up to 1984, or 30 years ago -- see http://www.military-today.com/trucks/man_kat1_8x8.htm . Of course thousands of MAN-KATs have also been exported. But I could not find a total figure for the number of MAN-KATs still in service in Germany today, or the comparative number of newer SX and HX trucks. Furthermore, my impression is that Germany’s “GTF” procurement program is very slow-moving, and that aging Bundeswehr MAN-KATs have not necessarily been replaced by HX or SX trucks, but rather, as often as not by Zetros or Actros trucks. Again, see http://translate.google.co.uk/trans...jFf_K7rTcHdV7XVXNUJwzzvP8BsADx5A!!/&sandbox=1 . And even if the Bundeswehr were not replacing MAN-KATs with Actros and Zetros trucks, the German government probably wants to replace aging MAN-KATs as slowly as possible, in order to save money.

If all of this is true, then it seems quite possible that one might sooner find a used HX or SX truck in the UK, as opposed to Germany. At present (May 2014), no ex-military HX or SX trucks are for sale by Aigner, FTN, or Mobile.de. Instead, just the usual assortment of MAN-KATs – see http://www.aignertrucks.com/en/vehicles/current-stock , http://www.inter-commerz.com/index.php/en/katalog-3 , http://suchen.mobile.de/lkw-inserat/man-kat-8x8-ladekran-perfekter-zustand-freiburg/194619517.html , http://suchen.mobile.de/lkw-inserat/man-kat1-mil-5t-glw-4x4-pritsche-winde-h-zul-fähig-potsdam/182488836.html , and http://suchen.mobile.de/lkw-inserat/man-man-kat1-a1-dfaeg-6x6-militärtruck-geländegig-hennef/36400632.html . But again, I am not certain whether this is an accurate description of that state of HX and SX procurement in Germany, and egn would be in a much better position to make such an assessment.

Is this true? As near as I can tell, none of the big German second-hand resellers currently carry SX models. Instead, they only seem to have older MAN-KAT vehicles.

Do you think it would be easy, or hard, to find a used SX-44 or SX-45 on the second-hand market in Germany?


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4. Which do you think would be better: a Tatra T-815 6x6, or a Rheinmetall-MAN SX-44 6x6? And why?

Please see the brief list of pros and cons at the bottom of page 26, and the discussion that followed – see http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page26:

So which would be better, a MAN SX-44 (if one can find one...), or a Tatra 815 6x6, either commercial or ex-military, of the sort that Jago Pickering used for his expedition motorhome? On the plus side:

....a used Tatra Phoenix or T 815 6x6 chassis would probably be easier to find than an SX-44 chassis
....a Tatra chassis would probably cost much less than a comparable SX chassis, whether built new, or found used
....a Tatra chassis would be even stiffer and more torsion-free than an SX-44 or SX-45 chassis

But on the downside:

....Tatra is a small company in comparison to MAN, and Tatra's service network is not nearly as large
....Tatra's ownership has changed a number of times over the last two decades, and Tatra's future always seems somewhat in doubt – see for instance http://www.opinicus-sro.com/Tatra-et-son-futur-en-point-d
....The Tatra 815's central tube-frame might be heavier than a comparable MAN SX-44
....The Tatra's 815's fuel consumption might be comparatively high

The last two "downsides" were suggested by egn, again in his thread about Blue Thunder.

Are you certain that the weight of a new Tatra T-815 military-grade truck would be more than the weight of a comparable SX-series truck? Remember, earlier in the thread I posted something about the weight of a commercial Tatra Phoenix 6x6 truck, and it did not seem to weigh more than a comparable Zetros 6x6.

Are you also certain that a Tatra’s fuel consumption would be much worse than an SX-series truck, especially now that Tatras can be fitted with lots of different engines, from different manufacturers? Again, see http://www.tatratrucks.com/why-tatra/tatra-vehicle-design/tatra-engine/ , http://en.wikipedia.org/wiki/Tatra_815 , http://www.tatratrucks.com/trucks/product-catalog/t-815-7/ , http://www.tatratrucks.com/trucks/c...-trucks/6x6-high-mobility-heavy-duty-chassis/ , http://www.tatratrucks.com/underwood/download/files/tatra-t815-790rk9-6x6-chassis_en.pdf , http://www.tatratrucks.com/trucks/c...-trucks/8x8-high-mobility-heavy-duty-chassis/ , http://www.tatratrucks.com/trucks/c...ity-heavy-duty-universal-cargo-troop-carrier/ , http://www.tatratrucks.com/trucks/c...ility-heavy-duty-universal-container-carrier/ , http://www.tatratrucks.com/underwood/download/files/tatra-military-vehicles_en-2.pdf , http://www.military-today.com/trucks/tatra_t815_78or89.htm , and http://www.military-today.com/trucks/tatra_t815_7mor89.htm .


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5. Deutz no longer seems to make a V8 air-cooled engine for specifically automotive use – see http://www.deutz.com/live_deutz_pro...xVGWBFRLggTTx7mZ9AUjDDd-wnO3LwAsA2rMs7yaJ-i_H . Sure, Deutz still makes air-cooled engines for mobile machinery, for generators, for agricultural machinery, and for marine applications. But it seems that the most powerful Deutz air-cooled engines, the 413 FW series, are now sold only as underground mining engines – see http://www.deutz.com/live_deutz_products/file/8a85818a11c1035d0111e008b88a026d.de.0/413fwuen.pdf . I tried looking for new, current information about Deutz V8 air-cooled automotive engines, and could find nothing.

So is this true? Does Deutz no longer make large, V8, air-cooled engines for RMMV trucks, or for any trucks?

What do you think about Tatra’s air-cooled V8 engine? Again, see http://www.tatratrucks.com/why-tatra/tatra-vehicle-design/tatra-engine/ . If Deutz no longer makes an air-cooled automotive V8, then perhaps Tatra is now alone, the only remaining producer of such engines? Apparently, Tatra’s air-cooled V8 can be made Euro-5 compliant.

Do you think an air-cooled engine is still strongly preferred? Blue Thunder has an air-cooled Deutz, so you seem to be in favor. But of course what was feasible 10 years ago may not be feasible today, because of tightening emissions restrictions.

So given a choice today, would you go with a liquid-cooled MAN, Cummins, Caterpillar, or Deutz engine instead? Or would you still want an air-cooled Tatra? Or perhaps an air-cooled Deutz engine driving a generator in an electric-hybrid vehicle?


*********************************


6. Tatra seems willing to sell to whomever it can, and one imagines that Tatra would also be willing to sell a new, military-specification T-815-7 to a civilian customer. Do you think RMMV (Rheinmetall-MAN) would be willing to do the same? Or are there laws in Germany that would prevent this?

As 109 Pretender wrote in the “Hemtt Define America Project” thread, in the United States there are indeed laws that would prevent this. In the United States the laws that would prevent this are so stringent, that they even seem to have undermined the very possibility of a robust American second-hand market for used, ex-military vehicles:

Asdean,

….Here's another reason I have my doubts that the HEMTT can't and never will be certified by DOT for civilian use. All excess military vehicles like this have to be 'de-militarized' before being sold for presumably scrap metal or military collectibles to the public. Meaning they get cut up with a torch. As a matter of fact there are only around 80 street legal military HUMVEE's from the 1980's depot sale in I think Atlanta. After that sale, the DOT stated that a military HUMVEE was not capable of meeting existent safety laws. All HUMVEE's that are sold today in public government. auctions have to be cut in half before being allowed to leave the depot. (Not that several haven't been purchased and welded back together - because some have...) But, they aren't legal in the eyes of the DOT. My state is very lenient on the interpretation of the laws - like we don't have any safety or emissions inspections and our small trailers don't have to be registered and tagged - other states are extremely tight with the law (California) so you need to check this out before purchasing something like a HEMTT or MAN KAT. Additionally keep in mind that 'visitors' traveling in our country are given exemptions for their rigs because they aren't staying permanently. AND I presume that your high profile adventure would want to be legal in the eyes of the law - right?

Clearly, similar regulations do not exist in Germany, or there would not be such a comparatively large and vibrant market for second-hand, used MAN-KATs. But perhaps there are still laws in Germany that would prevent RMMV selling a completely new HX or SX truck to a civilian?


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7. I've been wondering about the comparative fording capability of the HX versus the SX. Websites like Deagel, Military Today, etc. seem to suggest that the HX can also ford 1.5 m with preparation. But given that the HX engine is COE placement, I wonder if this is true? See http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page27 , top of the page:

Note that engine placement in the HX, which is based on the commercial TGA truck, is standard COE. In the HX the engine does not sit behind the cab, as per the SX, but rather it sits below the cab. But even still, according to the "Mobility Elite" brochure "the thermostat-controlled cooling system and air intake can be found on top of the frame behind the [HX] cab, which protects them from dirt and dust and allows for prolonged fording." See http://www.scribd.com/doc/17296072/The-Mobility-Elite .

The fording depth of the SX series without special preparation is 1.2 m, and with preparation, a maximum of 1.5 m. Deagel, Military Today, etc. state the same figures as the fording capability of the HX series. But I wonder if HX fording capability is in fact the same, given its COE engine placement?

So what do you think? Do you think that the HX-series has the same fording capability as the SX-series, even though engine-placement is COE in the HX? And if not, why not?


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8. Most MAN-KATs were not missile platforms, and most current HX and SX trucks are not missile platforms.

But what would you estimate was the overall percentage of MAN-KAT trucks that were in fact set up as missile platforms, in comparison to MAN-KAT trucks that were used for everything else, e.g. for payload delivery, reconnaissance, recovery, bridge-laying, tankers, etc.? I discussed MAN-KATs as missile carriers near the bottom of page 27 – see http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page27:

Even during the Cold War, the MAN-KATs that carried Roland, Pershing, and Patriot missiles were "extra-wide" variants that proved the exception to the rule:

"In the early 1980s, MAN supplied the Luftwaffe with improved vehicles of the KAT I A1 version as carriers in the 15-ton class. The 15 t mil gl BR A1 trucks, modified with a wider track of 2,900 mm, served as carriers and launcher systems of the Roland and Patriot weapon systems. The missiles are transported with a standard chassis truck with flatbed and 2.5-ton swiveling crane by Atlas." -- see http://en.wikipedia.org/wiki/MAN_KAT1 .

"Anfang der 1980er Jahre lieferte MAN verbesserte Fahrzeuge der "KAT I A1"-Version als Trägerfahrzeug der 15-t-Klasse an die Luftwaffe. Umgebaut auf eine größere Spurweite von 2900 mm dienen diese Fahrzeuge mit der Bezeichnung 15 t mil gl BR A1 als Geräteträger und Startsystem für die Waffensysteme 'Roland und Patriot. Als Lenkflugkörpertransporter wird ein herkömmliches Fahrgestell mit Pritschenaufbau verwendet, das um einen Anbaudrehkran 2,5 t der Firma Atlas erweitert wurde." -- see http://de.wikipedia.org/wiki/MAN_gl and http://translate.google.co.uk/trans.../search?q=MAN+KAT+wikipedia&biw=1920&bih=1102 .

These missile-carrying MAN-KATs were variants that had to be widened beyond the 2.55 m limit, rendering them unsuitable for second-hand civilian use. But even during the Cold War, most MAN-KAT trucks were not missile-carriers; egn might know the comparative percentages. Like present-day HX and SX vehicles, during the Cold War most MAN-KATs were logistics support trucks. It is these trucks that are now being converted to expedition motorhomes like egn’s “Blue Thunder”.

Just consider: MAN sold a total of 3500 MAN-KAT 1 trucks of the 7-ton class to the Bundeswehr, the kind of 6x6 MAN-KAT that has three axles instead of four. Vehicles this short could only serve as light rocket-launchers at best, and most in fact served as logistics support trucks -- see http://de.wikipedia.org/wiki/MAN_gl , http://translate.google.co.uk/trans...e.wikipedia.org/wiki/MAN_gl&biw=1607&bih=1102 , and http://www.military-today.com/trucks/man_kat1_8x8.htm .

A simple rough percentage here would be very useful, because some North Americans tend to think of MAN-KATs as only missile platforms, and as nothing but. Whereas the opposite is nearer the truth. This may seem an obvious point to a German, but it is not so obvious to a North American.


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9. In one of your posts you wrote that the “standard” MAN-KAT is 2.5 m wide, whereas only MAN-KATs that carry large missiles were widened to 2.9 m. So very roughly, out of the total number of MAN-KATs sold to the German armed forces, how many would you estimate were the wider, 2.9 m variants?


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There is no rush as regards answering these questions. Just thought I would compress and catalog the questions here, close to the posts that inspired them, while everything is still fresh in my mind.

I am not looking for precise answers, only very rough estimates. Because you are a MAN-KAT owner, and you drove a MAN-KAT in the Bundeswehr during your military service, you are a good person to ask such questions. No doubt participants on http://www.kat-forum.de would also know, but perhaps many of them are not as comfortable reading English as you, or replying in English as you. I could also ask these questions on the kat-forum myself in German, and then report back here in English. But there is something much more convincing about a real German MAN-KAT owner delivering such information! I am just a part-German designer living in London, who has been living outside Germany for so long that I never had to do my military service, even though I have a German passport.

Again, if I have made any mistakes anywhere in the "Photo Essay" or the "HX/SX Gallery", with regard to either text or imagery, please let me know!

All best wishes,



Biotect
 
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biotect

Designer
egn,

Thought I should write a supplementary post, explaining why I am so curious to know whether Rheinmetall-MAN HX-series trucks really can ford rivers up to a depth of 1.5 m, "with preparation".

As indicated earlier, I am now working on a COE design. From many different points of view COE seems the best overall compromise. Because I would like to have a Caravisio-style (or Wothahellizat-style) drop-down deck in the rear, I cannot really explore a pusher-type engine placement.

In the SX-45 the engine is placed behind the cab in a “CF” (cab-forward) arrangement, in part because the SX-45 needs to be air-transportable, and if the cab were stacked on top of the large engine, this would prove impossible. The HEMMT is a CF design for the same reason, and one consequence seems to be that the HEMMT cab is very uncomfortable, cramped, and "height-challenged"; not suitable for people like myself who are over 6 feet tall – see http://www.expeditionportal.com/forum/threads/48137-Hemtt-Define-America-Project :

And, did I mention that the [HEMMT] ride SUCKS?!!!!!!!! The cab is tiny (almost painful if you're over 6' tall) with a huge area of the cockpit taken up by the front drive elements.

Some Oshkosh trucks like the MTVR even have cabs whose tops detach, so that they can be air-transportable – see http://oshkoshdefense.com/vehicles/mtvr/ , http://oshkoshdefense.com/wp-content/uploads/2013/08/MTVR_Bro_Single_6-13-11.pdf , http://oshkoshdefense.com/wp-content/uploads/2013/08/MTVR_StndCargo_SS_6-13-11.pdf , http://oshkoshdefense.com/wp-content/uploads/2013/08/MTVR_Dump_SS_6-13-11.pdf , http://jedsite.info/transport-mike/mike/mtvr_series/z-document/Oshkosh_MTVR_brochure_07.pdf , and http://www.army-guide.com/eng/product2207.html .

But if MAN has figured out a way to get 1.5 m of fording depth even with a COE placement in the HX series, then clearly, CF placement is not necessary for excellent fording capability.

Now air-transportability is not an issue for an expedition motorhome. The larger 6x6 ActionMobil and UniCat motorhomes all have camper boxes that top out at 3.9 m or 4.0 m in any case, as does “Blue Thunder”. So there seems no particular reason why a fully integrated motorhome needs to have its cab-area and engine placement designed like a Rheinmetall-MAN SX-45. If the HX series is COE and still has perfectly good fording capability, then the obvious solution is to design the cab-area and engine placement somewhat more like the COE HX-series. But with engine-access via a hatch, as per Peter Thompson’s Mañana, or the “Tonto” off-road mining bus just pictured just above, made by Quality Bus & Coach.

For the Tonto’s engine-access hatch, see http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page21 :

Now that I was looking for it, found a good image of the Tonto's engine-tunnel and its CF or COE placement (not sure what to call it?), on one of the YouTube videos:


View attachment 224390


See http://www.youtube.com/watch?v=D_GnF4zsyF8#t=82 , about 40 % of the way in.

Again suggesting that a fully integrated design + a far-forward driving position that maximizes visibility, does not have to entail "Pusher" engine placement.

Sure, one might still want Pusher placement for other reasons, e.g. noise. Although according to one review, the Iveco's "Tector" engine in particular is not noisy at all -- see http://www.autobus.com.au/media/pdfs/abc-mag/abc-mag-2.pdf , pg. 66:

"The Tector engine is renowned for its quiet operation and in this bus it didn’t disappoint. The synchromesh manual gearshift was easy to live withand I found there was very little rumble through the body while out on the asphalt, which is surprising considering the huge cleated super single tyres that were pounding the ground outside."

Furthermore, even in a COE design there is no reason why the cab floor could not be perfectly flat, as per the most recent Mercedes Actros flat-floor cabs – see http://new-actros.trucks-mercedes-benz.com/en_GB/Comfort/details.html , http://new-actros.trucks-mercedes-b...ort/Living comfort/SoloStar Concept/zoom.html , http://mercedes-benz-blog.blogspot.it/2011/07/new-mercedes-benz-actros-cockpit-and.html , http://www.commercialmotor.com/big-lorry-blog/the-ultimate-long-haul-truck-b , http://www.topspeed.com/trucks/truck-reviews/mercedes/2012-mercedes-benz-actros-ar125913.html , http://www.riotengine.in/2011/07/06/new-mercedes-benz-actros/ , http://archive.commercialmotor.com/page/17th-january-2013/21 , http://archive.commercialmotor.com/page/17th-january-2013/23 , http://archive.commercialmotor.com/page/17th-january-2013/24 , and http://archive.commercialmotor.com/page/17th-january-2013/25 :


[video=youtube;_vNNf3KER4Q]https://www.youtube.com/watch?v=_vNNf3KER4Q [/video] [video=youtube;gh8yLDUzmmE]https://www.youtube.com/watch?v=gh8yLDUzmmE   [/video]
[video=youtube;GZp8fjjZq5k]https://www.youtube.com/watch?v=GZp8fjjZq5k [/video]

And see the YouTube playlist of Actros videos at https://www.youtube.com/playlist?list=PLYEBErsdXzUHru-lf1TkWCBlwZ8G7BN7h .

In the new Actros, a completely flat-floor cab is now an option for their “ClassicSpace” and “StreamSpace” cabs, and it is standard for their “BigSpace” and “GigaSpace” cabs – see http://www2.mercedes-benz.co.uk/con...New_Actros/facts/Cabs/classic_space_cabs.html , http://www2.mercedes-benz.co.uk/con...w_Actros/facts/overview_and_applications.html , http://www2.mercedes-benz.co.uk/con...New_Actros/facts/Cabs/classic_space_cabs.html , http://www2.mercedes-benz.co.uk/con.../New_Actros/facts/Cabs/stream_space_cabs.html , http://www2.mercedes-benz.co.uk/con...ros/New_Actros/facts/Cabs/big_space_cabs.html , http://www2.mercedes-benz.co.uk/con...ros/New_Actros/facts/Cabs/gigaspace_cabs.html , http://www.mercedes-benz-media.co.uk/commercial/model/pack/202/Actros+Summary , http://www2.mercedes-benz.co.uk/con..._Actros/advice_sales/download_e-brochure.html , http://tools.mercedes-benz.co.uk/current/trucks/brochures/products/new-actros-full.pdf , and http://tools.mercedes-benz.co.uk/current/trucks/brochures/accessories/actros-and-antos-brochure.pdf :


mercedes-long-distance-actros-05.jpg 842366_1561766_800_530_interior_4.jpg mercedes-long-distance-actros-08.jpg
2012-mercedes-benz-a-12_600x0w.jpg the-brand-new-mercedes-benz-actros-iii-24.jpg
comfort.jpg mercedes-long-distance-actros-12.jpg
2012-mercedes-benz-a-13_600x0w.jpg


The new Actros "flat-floor" cab comes in two height-variants, one that scales to approximately 3.41 m high:


flat_floor_cab_-_dimensions.jpg


And a taller one that scales to approximately 3.87 m high:


2500mm_cab_-_dimensions.jpg


In any case, just thought I should clarify the design motivation behind the question about HX-series fording capability. Sure, as per the HX-series, the TerraLiner air-intake should still be a large grille located up high and behind the first axle. But the HX-series locates the air-intake grille there, and yet still manages to locate the engine COE, under the cab.

All best wishes,


Biotect
 
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biotect

Designer
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1. Inspired by Joe


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On page 18 of this thread, near the bottom, Joe Manigna very usefully suggested that 4x4 and 6x6 “bus conversions”, of the kind used by mining companies in Australia to transport personnel to remote locations, were worth investigating further – see http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page18 . The “Tonto” pictured a few posts back is an example of such a bus.

In addition, Joe suggested that the kinds of off-road buses developed to ferry tourists to glaciers in Icleand, or remote corners of Australia like the Cape York peninsula in the Northern Territories (see http://en.wikipedia.org/wiki/Cape_York_Peninsula ), could also be sources of inspiration:

It occurred to me that a lot of the integrated designs seem to be bus-like, easily converted and repurposed, plus the market is a lot larger than one-off motorhomes, so a lot of R&D must have already been done for them. Given that a lot of these would be based on a flexible chassis, there must be a solution already designed for how to cope with flex of the chassis without destroying the cab. I did find a couple of interesting entries.

Iceland seems to get a number of 4x4 busses. Given the tourist market and the need to go through rivers off-road, seems to be a demand for an integrated solution:

4551.jpg


dcq_0539.jpg

Also see http://www.xor.org.uk/travel/iceland/20030713.htm and http://bus-and-coach-photos.com/picture/number4551.asp .

Joe is most certainly right about this. The description for the first image above runs as follows:

Icelandic Highlands Coach

Rebuilt on a new 380hp 4x4 Scania chassis this Jonckheere is just perfect for travelling in the Icelandic highlands, where crossing Glacier rivers is everyday business along with really rough terrain. This one seats 43 passengers.

Doing a search for “4x4” on the “Bus and Coach Photos” website at http://bus-and-coach-photos.com , then turned up this beauty:


5191.jpg 5192.jpg


And here's the description – see http://bus-and-coach-photos.com/picture/number5191.asp and http://bus-and-coach-photos.com/picture/number5192.asp :

Neoplan N 213 4x4 Hotelbus

This is a custom made bus with three tiers, drive and supply - sleeping cabins - living area. It is shown here on the Tademait Plateau in Central Sahara / Algeria in January 1985.

The bus was 4WD, with air-suspended MB planetary axles, MB 250 hp V8 engine, ZF 6 speed gear box, Getrac transfer gear box with splitter and central diff.

The bus was designed for 16 passengers and 2-man crew on remote routes into Sahara dessert and Iceland.

It was equipped with sleeping cabins, toilet, shower, kitchen, 4 star seating either forward facing, or by easy conversion in 4 table groups, wardrobe, library, emergency kit, generator.


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2. The French
“Bus 4x4 6x6” thread on the “B90 Story” website


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Just recently I re-visited a great thread dedicated to 4x4 and 6x6 buses on the French “B90 Story” website – see http://bernard.debucquoi.com , http://translate.google.co.uk/translate?hl=en&sl=fr&tl=en&u=http://bernard.debucquoi.com/ , http://translate.google.co.uk/translate?hl=en&sl=fr&tl=en&u=http://forum.bernard.debucquoi.com/ , and http://translate.google.co.uk/trans...id=e9114e11b716da0a1025880d8f731764&sandbox=1 . I still can't quite figure out what the animating principle behind this forum might be, except that it seems set up and moderated by Bernard Debucquoi.

In any case, have been working my way through the posts and abundant imagery on the “4x4 6x6 Bus” thread in particular – see http://forum.bernard.debucquoi.com/...start=60&sid=e16e82ecfd0d8f9d38120f1984e44fdb , http://translate.google.co.uk/trans...id=e9114e11b716da0a1025880d8f731764&sandbox=1 , http://translate.google.co.uk/trans...9c7a235a0f93fe46307ce6aedc&start=20&sandbox=1 , http://translate.google.co.uk/trans...19eb5a3bdc757a7bbb60208a22&start=40&sandbox=1 , http://translate.google.co.uk/trans...19eb5a3bdc757a7bbb60208a22&start=40&sandbox=1 , and http://translate.google.co.uk/trans...19eb5a3bdc757a7bbb60208a22&start=40&sandbox=1 .

This rich thread is packed with the kinds of off-road, 4x4 and 6x6 buses that Joe suggested were worth looking into further. It's going to take a while to follow all the leads, but on page 2 I came across this stunning 6x6 Tatra Bus Conversion – see http://translate.google.co.uk/trans...19eb5a3bdc757a7bbb60208a22&start=40&sandbox=1 :


Photo%20029.jpg Photo%20030.jpg Photo%20027.jpg
Tatra_bus_Val_ARD.jpg tatra_bus_val_avd.jpg


Apparently, it was used by “Prestige Adventure Tours” as a tour bus in the desert. The link to the company's website is now dead, so perhaps it has gone out of business? – see http://www.prestigeadventuretour.com/indexfr.html .

Then used google image-search to see if I could track down other websites with similar (and perhaps additional) images of this exceptional Tatra 6x6, or at least higher-res images. Did come across some slightly higher-res images, but no additional images of the same vehicle, at the following websites: http://www.mercotribe.net/phpBB3/vi...d=a86c538cfc3bb19cd5f2d0e5b24009b6&start=1460 , http://www.mercotribe.net/phpBB3/viewtopic.php?f=11&t=113&start=1480 , http://www.furgovw.org/index.php?topic=256307.330 , http://translate.google.co.uk/trans...et/phpBB3/viewtopic.php?f=11&t=113&start=1460 , http://www.avia-club.com/forum-tema/zakony-vyhlasky-predpisy-2255?kols=2 , http://translate.google.co.uk/trans...rum-tema/zakony-vyhlasky-predpisy-2255?kols=2 , http://www.truck-forum.cz/forum/vie...art=2535&sid=179db817a2ed64f46f96693abd992eae , and http://translate.google.co.uk/trans...p=526488&sid=c14d5f3a5e481744d73ffa6fb1da3623 .

If anyone reading this comes across additional images of this fully integrated 6x6 Tatra conversion, please post!



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3. Vintage Tatra 6x6 Expedition Motorhome


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Now on the last two Czech websites in particular, then found these rather surprising images of an older Tatra 6x6 bus conversion:


olda_gtc02.jpg olda_gtc01.jpg


“Google translate” is pretty good for German, French, and Italian, but seems to make a mess of Czech, so it was impossible to figure out from these websites alone what this vehicle was. A few weeks ago I then tried doing an image-search to track down this unusual Tatra, which seems like it could be an example of a “Fully Integrated Vintage Tatra 6x6 Expedition RV with Rigid, Torsion-Free Frame”. But for whatever reason, google kept telling me that these two Czech blogs are the only places on the Internet where these images appear.

I don't give up easily, so after massively increasing the resolution of the images, plugged them back through google image-search, on the off-chance that making google work harder would force it to deliver. Suddenly a veritable river of websites appeared, packed with imagery, albeit all of them in Czech.

Turns out that this Tatra is somewhat famous (at least in the Czech Republic), and iconic. It's called the "Tatra 815 GTC", where GTC stands for "Grand Tourist Caravan". It's not fully integrated, but it could be considered at least semi-integrated. When it drives over difficult terrain, the cab and the camper box remain completely rigid with respect to each other. With just a bit of redesign it could have been fully integrated, like the French Tatra 6x6 conversion above. And at the very least it's an early example of a globally capable, high-altitude competent, 6x6 expedition motorhome.

The Tatra 815 GTC went on a "Round the World" expedition in the late 1980's to promote Czechoslovakian industry: all over Europe and the Soviet Union, Canada and the United States, Central America, South America and the Andes, Australia and New Zealand, all over Asia, and then all over Africa, 67 countries in all. It left the former Czechoslovakia in 1987, and after 3 years, 42 days on the road, returned to the new Czech Republic. It now sits in the Tatra Technical museum, in Czech. A bit further along in the thread I've created an extended series of posts that provides fairly thorough coverage of this important vehicle. Almost nothing is available about the Tatra 815 GTC in English on-line. So it seemed worthwhile to devote considerable time and effort translating and reposting the abundance of information that's now available in Czech.

All best wishes,


Biotect
 
Last edited:

egn

Adventurer
biotect,

you are producing so many posts that I don't have the time to go through all in detail. The other point is that your references to pages is useless, because I have very long pages. Please use the post number in the top left corner as reference like #282 which contains your questions.

As I wasn't interested in any statistical numbers so far, I can give you effectively no information about this. I have seen some statistical number regarding sales available in the KAT forum.

Q1: I have no information about this.

Q2: 2014 there were 126 civil registrations of KAT 1.
Here you find a thread with information about the KAT of the forum members.
List of VEBEG sales.


I have no numbers about European registrations.

Q3: You will probably find modern SX trucks only as damaged vehicles from accidents or vandalism. Why should the state sell this trucks when they are just at the beginning of their life.

Q4: This is hard to answer because I don't know both vehicles in their current modern versions. The technical differences may be only marginal. My decision 2005 was based more on the availability of used vehicles at this time and the available support.

Of course, MAN seems to be much more successful in selling. I think it is more a personal decision. I would still prefer the SX because of the available. In every large city in Germany there is a MAN shop and most free shop know MAN vehicles because they work on them every day.

Q5: Deutz has stopped producing 413 engines for vehicles a long time, because of the environment issues. But they are still produced on license in China and used there for Chinese army vehicles. Some people in Germany have imported parts, but it is seems to be the quality isn't that good anymore.

When the Tatra air-cooled V8 appeared I contacted Tatra and asked for availability and price, because I thought it might be a nice upgrade. But the engine price of about 30.000 €,new transmission like Allision 7-speed and conversion, wasn't in my budget.

I think that air-cooled engines have no market in vehicles anymore. The water cooled engines are good enough for nearly every environment on earth.

I would go with an engine that can be serviced world wide. So I wouldn't choose an air-cooled Tatra and of course don't choose a Deutz for a electric-hybrid. Modern water-cooled engines are way more efficient and much more silent. Some people say that Deutz engines are noise-cooled. :)

Q6: I don't think you are willing to buy a real military grade vehicle, because it would be much to expensive and would have a lot of useless components. So you would be a customer just like Rosenbauer, Ziegler, et all that buys a the base chassis with engine.

There are also export restrictions on ex-military vehicles in Germany. But for the old KAT1 they seem to be not very restrictive. The are certainly in place with complete modern SX vehicles, but as MAN sells the trucks world-wide their may be a special export version available.

Q7: I think the fording capability isn't restricted by the placement of the engine. If the engine gets air, enough cooling and the electrical connectors are water proof it can also run below the water line. On YouTube you can find a lot of videos where the engine of the vehicles is running below water when crossing deep water.

BTW, Marcel drove his KAT1 with some preparation once through 2,5 m deep water without any problem. :sombrero: Of course, he had to cleanup afterward. But, he has converted his KAT1 to a very special vehicle that is much more capable as the original 4x4. You find more information on his web site.

Q8: Here was some information available for the original KAT1, but is currently missing.

Q9: I don't know.
 

biotect

Designer
Hi egn,

Many thanks for the responses, and the tip re the post-number in the upper right corner. Was wondering how to best refer to previous posts.

The number of German civilian MAN-KAT registrations is very informative: 126 is over ten times the 12 civilian HEMTT registrations in the United States. But the comparative ratio is actually more than that, because Germany has 80.7 million people, whereas the United States has 318.15 million. So if Germany had the same population size as the United States, it would have 496 civilian MAN-KAT registrations. It's then more accurate to say that there are 40 times as many civilian MAN-KAT registrations in Germany, as there are civilian HEMTT registrations in the United States, on a per-capita basis.

Also thanks for the background regarding Deutz, and air-cooled engines in general. Recently I've become very interested in Oshkosh's off-road-capable hybrid-electric system for medium and heavy trucks, but I still wanted to know what the comparative benefits might be for an air-cooled engine, especially as regards off-road and extreme-climate driving. Was just reading that the T815 GRC 6x6 used on the "Tatra Round the World" expedition ("Tatra Kolem Světa"), had a 10-cylinder air-cooled engine that performed beautifully in extreme cold, Siberia, Alaska, etc., but was not quite as good in the tropics.

Finally, many thanks for that link to Marcel's web-page.

Interesting vehicle: a MAN-KAT truck that can dance....:)


06e055a4-179f-a710-d935-9cfc362f8b5f.jpg cae1afe0-4a78-861d-3593-3015a0d1eb8a.jpg 3fb97e62-9a07-d0ec-39bc-1efe82b93bdd.jpg


See http://www.kley-mobile-werkstatt.de/ueber-mich/ and http://www.kley-mobile-werkstatt.de/Bilder/ .

The term at Art college is almost over, and I've not yet left for Europe, so I have a bit of time on my hands, and yeah, I've been producing lots of posts.....:) ...II also touch-type (mom insisted that I take a typing course in secondary school), my Mac computer is reasonably fast, and I use "DevonThink" for information management. So perhaps my "speed-blogging" is cybernetically enhanced? See http://www.devontechnologies.com/products/devonthink/overview.html . But now that I have more time, will try reformulating some of the remaining questions in German, and will ask them on the Kat-forum.

Note that I merely wanted to get as many questions "sharpened" or rendered more "precise", before visiting with RMMV, Unicat, Tatra, Actionmobil, et al this summer. The quality of the information that one gathers tends to depend on the precision of the questions one is able to ask. So again, many, many thanks for your help and responses over the last few months.

All best wishes,



Biotect
 
Last edited:

grizzlyj

Tea pot tester
Hiya

The Tankograd book on the MAN KAT explains why and how it was possible to build an otherwise too costly truck, and a little about design decisions along the way such as flex/no flex, independent vs beam axle. Printed in English and German it is a very worthwhile read :)

I believe Actionmobil use a 12/24v Danfoss compressor kit in an insulated box they build to make best use of space available. I suppose it could also be possible to install this kit into one one the mains powered units you considered as well as its own mechanicals to get the best of both worlds. I do wonder what items you envisage you would put into a massive fridge that would need cooling, that was available and that would last 4 weeks plus? Wothahelizat has part of the floor sandwich space dedicated to home brewing, perhaps downsize the fridge and allow for this? ;)

Series 1 Landrovers had Safari roofs like the caravan previously posted, so pre 1958.

EGN mentioned a while back that there is no diff between his rear axles. Does that mean that a 6x6 made from an 8x8 MAN KAT with rear axle removed would have a better turning circle than a normal 6x6? One post I've read on the KAT forum suggests a 4x4 and an 8x8 are better in sand than the 6x6 but maybe that was more opinion than fact? :)

A totally stupid suggestion of mine would be to use a Subaru boxer diesel engine within the chassis rails directly driving one axle each. In total that would give enough power and torque, very compact, and if EGNs truck can manage with two axles scrubbing on corners I would think dissimilar wheel speeds from slightly different engine characteristics could be minor on a truck, or computer controlled for harmony. Rubbish torque curve I imagine for direct connection, but torque converters or hybrid drive and a constant diesel rpm?

The vehicle accessibility thing I think is more of a yes or no rather than a % accessible. Forum posts saying Russian bridges are 3.5m, or African safari parks allow Landrover sized vehicles only, or some 4x4 tracks in Australia allow Landy sized stuff and bigger just won't fit. Something that I've posted before because it surprised me is our 3.9m camper couldn't go to Andorra from France, we would have to have driven all the way around it and down into Spain before coming back up. If your dream trip entails any of the few you can discover before you leave, Biotect's little truck will not be on the shopping list. I wonder how the orange Italian 6x6s would have got on in the mud if they were lightly loaded, 10 tons instead of ???

Which side the steering wheel is on may be an insistence on the part of the customer, as many without experience will not want to be too far out of their comfort zone perhaps? LHD cars sell very poorly in the UK even with such temptations as the new Corvette Stingray. The height of a truck cab makes steering wheel side fairly irrelevant though, the driver will mostly have a passenger in such a camper, you just have to persuade the customer that its no big deal.

One place in Morocco we spent some time had bottled water to drink and brackish groundwater. If I had a water filter working on osmosis I think I would have had plenty of drinking water from the wells. The PreMac filter we did have is very effective but doesn't remove salt (or heavy metals come to that), and the element lifespan was reduced by putting this water though it. We didn't know at the time but drinking this filtered ground water gave a mildly upset stomach. I think having a good filter for drinking water most of the time (Seagull IV X-6?), and a means of converting sea water occasionally would be ideal. Coarse filtration into a main tank, proper filtration into a drinking water only tank. I'm not sure about filtering shower water? A drinking water only tank means you could empty the locally bought water bottles into it saving space, and if you keep it full you have a drinkable reservoir in the event of a power or filter failure. Micro Pur Forte powder maintains water quality for six months once its in a clean condition. (A mug sized tub for 50000l has a several year shelf life and costs about €80)

And at the rear end of my post http://www.expeditionportal.com/for...g-Toilet-—-Report-on-8-months-full-time-usage
 

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