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

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Piranha_III_Mowag_wheeled_armoured_personnel_carrier_Switzerland_Swiss_rear_back_side_view_001.jpg Piranha_5_wheeled_armoured_combat_vehicle_General_Dynamics_European_Land_Systems_Eurosatory_2010.jpg PiranhaIIIhDanePitarch (2).jpg
DSC_3417-X2.jpg piranha5_01.jpg m02008062000092.jpg
US_Army_53413_Range_Training_in_India_fires_up_Strykehorse_Soldiers.jpg LAND_VBCI_Dismount_VBL_lg.jpg M1126Stryker.jpg
Stryker_by_Augustas_Didzgalvis.jpg



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[video=youtube;ZB016gMDAAk]https://www.youtube.com/watch?v=ZB016gMDAAk [/video] [video=youtube;a7ejJfpJ61g]https://www.youtube.com/watch?v=a7ejJfpJ61g [/video]


The Piranha series of armored personnel carriers has as long history, and was first designed and developed by MOWAG in Switzerland in the 1970's -- see http://en.wikipedia.org/wiki/Mowag and http://en.wikipedia.org/wiki/Mowag_Piranha , http://www.gdels.com/products/wheeled_4.asp?id=1 , http://www.gdels.com/products/pc3_1_gallery.asp?n=1 , and http://www.gdels.com/brochures/wheeled_piranha8.pdf . The Piranha has gone through many iterations since then, with the Piranha V first shown to the public in 2010. MOWAG is now part of the General Dynamics European Land Systems group.


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The German "Boxer", Finnish "Patria", Austrian "Pandur", and American "Stryker" armored personnel carriers are roughly similar to the Piranha; indeed, the American "Stryker" is actually a variant of the Piranha III, but manufactured in Canada -- see http://en.wikipedia.org/wiki/Stryker . Hence I took some liberties above, when I mixed in some photos of Strykers with photos of Piranhas.



[video=youtube;HEFNiiIIQM8]https://www.youtube.com/watch?v=HEFNiiIIQM8 [/video]
[video=youtube;uViv28kRwW8]https://www.youtube.com/watch?v=uViv28kRwW8 [/video]



For some good Stryker playlists, see https://www.youtube.com/playlist?list=PLdGhy0BNdEeM9QJk70QqLqiGRD7reLEDv and https://www.youtube.com/playlist?list=PLdGhy0BNdEeMvw6YKqDL_w-0VNQnynvkP .


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Here a few more videos of various other makes/brands of armored personnel carriers. First, the German "Boxer" -- see http://en.wikipedia.org/wiki/Boxer_(armoured_fighting_vehicle) , http://www.rheinmetall-defence.com/...ems/armoured_wheeled_vehicles/boxer/index.php , http://www.military-today.com/apc/boxer_mrav.htm , http://www.army-technology.com/projects/mrav/ :



[video=youtube;eLLbo2c_pZo]https://www.youtube.com/watch?v=eLLbo2c_pZo [/video]
[video=youtube;V86B0BfW_OE]https://www.youtube.com/watch?v=V86B0BfW_OE [/video]



Next, the Finnish "Patria" -- http://en.wikipedia.org/wiki/Patria_AMV , http://en.wikipedia.org/wiki/Patria_(company) , http://www.military-today.com/apc/patria_amv.htm



[video=youtube;CZzWjE4WNzo]https://www.youtube.com/watch?v=CZzWjE4WNzo [/video]



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And finally, the Austrian "Pandur" -- http://en.wikipedia.org/wiki/Pandur_I , http://en.wikipedia.org/wiki/Pandur_II , http://www.military-today.com/apc/pandur_2.htm :


[video=youtube;UDJGSya2kAU]https://www.youtube.com/watch?v=UDJGSya2kAU [/video] [video=youtube;EyDATgmHRKM]https://www.youtube.com/watch?v=EyDATgmHRKM [/video]



Clearly, there is quite a difference between these kinds of dedicated armored personnel carriers, and the Kamaz Typhoon.

Indeed, armored personnel carriers of the kind just shown are often called "Infantry Fighting Vehicles", to underscore their combat-ready capability. They are much more low-slung, for instance, so that they present the lowest and most minimal profile to potentially lethal adversaries, such as tanks or hand-launched missiles. Furthermore, when a vehicle like the "Stryker" is fitted with a substantial gun turret, in effect it becomes a very light-weight, nimble, "wheeled" tank.

Last but not lease, although the Kamaz Typhoon's windows are not exactly huge, truly dedicated armored personnel carriers do away with windows completely. They are driven either via closed-circuit TV, or periscopes, or both. Here are some more interior images of the Piranha V, showing the driving station:


pc5_03.jpg pc5_04.jpg pc5_05.jpg


So the Kamaz Typhoon is not a full-blown armored personnel carrier as such, even though it has some interesting features in common with these, for instance, hydro-pneumatic suspension (more on this in a later series of posts....:wings: ).

Instead, I would classify the Typhoon as roughly equivalent the Oshkosh FMTV line of medium-weight trucks -- see post #330 on page 33 at http://www.expeditionportal.com/for...pedition-RV-w-Rigid-Torsion-Free-Frame/page33 . The Typhoon is certainly an armored troop carrier, there is no question about that. But the Typhoon is still not as heavily armored, offensively equipped, and combat-capable, as a Piranha, Stryker, Boxer, Patria, or Pandur.

In short, "amoured troop-transport truck" seems the best description for the Typhoon.

Or once again, one could say that the Typhoon is really just an MRAP: a Mine-Resistant Ambush Protected vehicle, whose main purpose is to deliver troops safely to their destination -- see http://en.wikipedia.org/wiki/MRAP .


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2. A parenthetical remark about the Piranha V's all-wheel steering


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In the second set of pictures of the Piranha V immediately above, notice the variety of turning angles of the wheels:


pc5_18.jpg pc5_17.jpg pc5_16.jpg
pc5_20.jpg pc5_21.jpg pc5_19.jpg



Much like all-terrain cranes of the kind made by companies such as Liebherr, Grove, Linkbelt, Tadano, and Terex, the Piranha V armored personnel carrier has all-wheel steering -- see post #34, page 4, and post #44, page 5, at http://www.expeditionportal.com/for...xpedition-RV-w-Rigid-Torsion-Free-Frame/page4 and http://www.expeditionportal.com/for...xpedition-RV-w-Rigid-Torsion-Free-Frame/page5 :



3.jpg 4.jpg
7.jpg 8.jpg


But as opposed to all-terrain cranes like those pictured immediately above, nobody would ever claim that the Piranha V is not a "true" off-road vehicle. Recall that very early in the thread egn and grizzlyj suggested that all-terrain cranes are not truly "off-road". They suggested that this is mostly just marketing hype. Furthermore, when/if these very heavy cranes do go off-road, they do so at very slow speeds:



All-terrain cranes
are no real off-road vehicles. They are so heavy and have so small tires that the load on the surface is extremely high. Often the road to the intended place of use has to be prepared specially to cover the weight. They don't have to be constructed as robust as a real off-road vehicle, because the move only at pedestrian speed in the construction side.

.....everything possible is done on a building site to try to ensure [these all-terraiin cranes] do not experience anything like offroad. The rep will nearly always visit to check before his precious crane arrives, and if more hardcore needs putting down beforehand at your cost then that's what you do. From what I've seen these have as much off road capability as a normal RV :)


No doubt these were correct statements about "all-terrain" cranes of the kind made by Liebherr, Grove, etc.

But again, at the beginning of the thread I merely introduced all-terrain cranes to illustrate just how "interesting" all-wheel steering can get, thanks to ZF industries. And in the case of the Piranha V, clearly we have all-wheel steering combined with true off-road capability, at high speed, demonstrating that such a thing is possible. Literally more than 9,000 Piranhas have been built for the world's various armed forces, including the "Stryker" for the United States -- see http://www.army-technology.com/projects/piranhav/ . So presumably the engineering challenge was worked out decades ago, i.e. the specific challenge of creating very reliable all-wheel steering for a vehicle that must drive truly "off-road", at very high speeds.


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3. The Kamaz Typhoon's Dimensions. And, Is it Fully Integrated?


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The Typhoon has a great “breakover” angle, i.e. virtually none whatsoever:


KAMAZ_63968_Typhoon_K_MRAP_vehicle_armored_truck_April_9th_rehearsal_in_Alabino_of_2014_Victory_.jpg 0_91a33_585d514d_orig.jpg kamaz_taifun_l7.jpg


But that’s because the Typhoon is a bit shorter than the projected length of the Terraliner.

Depending on which website you believe, the Typhoon is either:


(a) 7.8m long, x 2.52m wide, x 2.75m high – see http://www.army-technology.com/projects/kamaz-63969-typhoon-mrap-armoured-vehicle/

(b) 8.2 m long, x 2.5 m wide, x 2.93 m high – see http://www.armyrecognition.com/russ...ruck_technical_data_sheet_pictures_video.html .

(c) 8.2 m long, x 2.55 m wide, x 3.3 m high – see http://www.deagel.com/Tactical-Vehicles/Kamaz-63968_a002964002.aspx .

(d) 8.99 m long x 2.55 m wide x 3.3 m high – see http://www.military-today.com/apc/kamaz_taifun.htm and http://en.wikipedia.org/wiki/Kamaz_Typhoon


Whichever combination of measurements is correct, the Typhoon is still about 1 – 2.5 m shorter than the projected length of the Terraliner, i.e. 10.5 m.

In the videos of the Typhoon crossing rough terrain, it seems pretty clear that the driving cab versus the cabin for the soldiers behind are mounted separately. Even though they are connected by a passageway, in the videos it's quite clear that they move and hence are mounted separately. So one could not really call the Typhoon a “fully integrated” design, although externally it first appears as much.

The Typhoon also still has a forward-tilting cab, which is undesirable if one wants a "fully integrated" design:


Untitled-1.jpg


And the Typhoon's engine is located very high and to the side, directly behind the driving station, and behind the horizontal air-intakes in the following photographs:


29o4y0m.jpg KamAZ-63968_Typhoon_-_Engineering_technologies_2012_(2).jpg 2010_KamAZ_63698_Typhoon_6x6_military_f_2048x1536.jpg
1314011047_kamaz_taifun-1.jpg image.aspx4.jpg 0_6742b_98ac7a1d_orig.jpg



So the Typhoon could never be the basis for a “one room”, fully integrated motorhome design.


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4. The Kamaz Typhoon: Why Tandem Axles in Front?


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The Typhoon has a “front double axle” or “tandem axles in front”. This is somewhat unusual, and deserves extended consideration.

First off, it’s well worth noting that on the web, the vast majority of cargo-carrying military trucks that one sees with this axle arrangement are Tatras. But old Tatras specifically. In its most recent military catalog, Tatra does not offer even one model with this kind of axle configuration – see http://www.tatra.cz/underwood/download/files/tatra-military-vehicles_en.pdf . Not one.

It then seem worth asking, why? If there are distinct advantages to “tandem axles in front”, then why is not more standard? Why do the vast majority of 6x6 trucks, military and civilian, have just one axle in front, and the second and third axles in tandem in the rear? And yet old Tatra 6x6s with tandem axles clustered in front figure very prominently in truck trials. Why are they so popular in that specific context? What advantages does this axle arrangement give a 6x6 truck in rough terrain?


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5. Old Tatra 6x6s with Tandem Axles in Front: Ballast Tow Tractors


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According to one website, the tandem-axles-in-front Tatra 6x6s that one sees used in Czech truck trials on YouTube were once load haulers, “ballast tow tractors” designed to pull a drawbar trailer in back, moving loads of up to 120 tons – see http://www.pirate4x4.com/forum/expedition-vehicles/1296873-tatra-6x6-adventure-trialtruck-build.html , http://www.thedieselgarage.com/forums/showthread.php?t=125314 , http://en.wikipedia.org/wiki/Tractor_unit , andhttp://en.wikipedia.org/wiki/Ballast_tractor . Czechsix made the same point .

For a veritable gold mine of images of old tandem-forward 6x6 Tatras performing this function, see http://s865.photobucket.com/user/sean999r/media/TP6/88F87634-2B09-491C-9C60-95F55DFFA2B5.jpg.html , and just scroll backwards or forwards in the image stream. Here are some of the best images:


88F87634-2B09-491C-9C60-95F55DFFA2B5.jpg Tatra-815_6x6_shot_2010.jpg tatra-815-6x6-tp6--31735.jpg
0829111309718_imageeditor_08jeprtorbenrafn58.jpg 0829111118943_imageeditor_156tp03.jpg tatra_ballast_um_242.jpg
Tatra_813_letišt?.jpg 0829111430324_imageeditor_156tp08.jpg 0E1CC0DE-726D-4490-B3E1-8D52118665DA.jpg
re_tatra_8133.jpg



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0829111710179_imageeditor_156tp09.jpg 0829111811684_imageeditor_t813_27.jpg 0829111544941_imageeditor_8156tpp.jpg
t8131ug0.6699.jpg tatra-813-tp-6x6-03.jpg tatra-813-tp-6x6-11.jpg
8036384425_b9148063b9_ox.jpg tatra-813-tp-6x6-09.jpg tatra-813-tp-6x6-08.jpg
tatra-813-tp-6x6-01.jpg



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re_tatra_813.jpg re_tatra_813e.jpg tatra-813-tp-6x6-08.jpg
maxresdefault.jpg hqdefault6.jpg i430541.jpg
3052967980_a9f77da6f7.jpg re_tatra_813s.jpg re_tatra_813t.jpg
Tatra_813_pretah_vlek_IMG_4855.jpg



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tatra__813_6x6_1980_1_lgw.jpg tatra__813_6x6_1980_2_lgw.jpg tatra__813_6x6_1980_3_lgw.jpg
tatra__813_6x6_1980_4_lgw.jpg tatra__813_6x6_1980_5_lgw.jpg



Here are two videos, of the Tatra 813 6x6 Ballast Tow Tractor in operation, actually towin' very heavy and very large stuff. These videos should serve as useful reminders of the original purpose of these vehicles, before they became re-purposed as premiere 6x6 truck-trial machines:



[video=youtube;HD_m6qjL7ls]https://www.youtube.com/watch?v=HD_m6qjL7ls [/video] [video=youtube;8tAkQNHrlbA]https://www.youtube.com/watch?v=8tAkQNHrlbA [/video]
[video=youtube;RNSaB5Riht0]https://www.youtube.com/watch?v=RNSaB5Riht0 [/video] [video=youtube;HakwJpmSXrk]https://www.youtube.com/watch?v=HakwJpmSXrk [/video]



Here are some more examples of old Tatra 6x6 813's that have tandem axles in front, but these are more "static" images, without their towed trailers following behind:



T_813_IMG_7989.jpg tatra-813-6x6-09.jpg 4123913307_72b3fd71a3.jpg
tatra-813-6x6-10.jpg ba6313-2.jpg



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D65E8580-6FC3-4A97-84F0-3B08A377652B.jpg 9BF4CC68-FD83-4915-9198-0B90CC74A4A7.jpg
12780528-00C5-4A9C-8413-F1FFFFDB274F.jpg 62598D8A-7849-4597-8463-FEECEF04A18E.jpg
C990249B-B9EB-49D1-AFEB-62E972A9678A.jpg 2125E777-6105-4D4C-8054-7B0B0C3E0E19.jpg
D6674840-5206-49E5-998E-49AD9F00FB7D.jpg pict0001.jpg
5ab281ee.jpg e31ba7ec.jpg



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EFFA0A72-BE9A-496A-89E6-3425DD1F9802.jpg 98101dccaece892739176d1649e57f4c.jpg 407E4396-7C98-4784-916C-4EA7F0212F23.jpg
c8c6d043891918d6a050c1d91d82b6e0.jpg 00320ebc3d8d55b35b447271c841eb4b.jpg D4066DBD-FD0F-4C33-84FB-749C3FCB6DD3.jpg
AF75CBE4-C447-428B-A2F0-818794DBCFB5.jpg 5E27C8A0-8CE7-4AE7-B736-E094F5A92037.jpg d5c84278.jpg
BE91D2FE-39C0-40E5-8D80-98DF35F62031.jpg




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6. Why Tandem Axles in Front on these Tatra 813 Ballast Tow Tractors?


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These Tatra Ballast Tow Tractors functioned as the "prime-movers" lugging very heavy or oversize loads. So their axle-configuration seems somewhat understandable.

But not completely understandable.

For instance, the standard modern configuration of a truck that pulls a semi-trailer is one axle forward, two axles in the rear, whether European COE, or American CBE:


dc9f618ec171633234.jpg Shell_tanker_truck.jpg Tractor_unit_MAN_TGA_33_440_6x6_Hidro_drive-xxl-4561_133468900.jpg
InternationalLoneStar@2008Web332.jpg 2009-international-lonestar-harley-davidson-special-edition-38_cd_gallery_zoomed.jpg 2009-international-lonestar-harley-davidson-special-edition-61_cd_gallery_zoomed.jpg
fd78f8cd5486fd416551db70ffceb92a.jpg 5263e3e0ffa1903dd58ce326361743ea.jpg 332189-alexfas01.jpg



This makes sense, of course, because these trucks are designed to pull semi-trailers in which part of the weight of the trailer rests on the back of the truck.


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Now granted, a standard semi-trailer truck is not a "Ballast Tow Tractor".

But even in the more "vintage" images of Ballast Tow Tractors that one finds on the web, things are no different. Below are some vintage images of Ballast Tow Tractors, doing some extreme haulage during the same era as the Tatra 6x6s shown above. And yet they have just a single axle up front, with additional axles clustered in the rear -- see http://en.wikipedia.org/wiki/Ballast_tractor :


14d2.jpg 6331151703_3f088d4f96.jpg Overweight_load_transport.jpg


For the Flickr "Heavy Haulage" photo stream, with hundreds of images of images of vintage Ballast Tow Tractors, see https://www.flickr.com/photos/62532775@N03/sets/72157631653130434/ . Aside from the Tatras, almost all of them follow the standard one axle up front + more axles in the rear configuration.


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7. Some Contemporary Heavy Haulage Ballast Tow Tractors


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Moving up to the present, things have not changed. The souped-up "heavy haulage" Actros and Man trucks configured by Titan Gmbh and others all tend to follow the standard format of one axle forward + additional axles in the rear -- see http://www.titan-sf.com/index.php/en/ and http://www.titan-sf.com/index.php/en/vehicles/gallery , http://de.wikipedia.org/wiki/Titan_Spezialfahrzeuge , http://www.ditzj.de/html/en/trucks/mercedes/actros4165etra.html :


25032008-010.jpg randolph-4.jpg SLT-Rahmen-002.jpg

saie2010_27.jpg saie2010_33.jpg
saie2010_28.jpg saie2010_29.jpg



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