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Thread: Eco-Roamer - F650 based Expedition Vehicle

  1. #1
    Join Date
    Oct 2006
    On a dirt road, somewhere between where YOU are, and "there".

    Default Eco-Roamer - F650 based Expedition Vehicle

    Well, after 2 years of planning, sketching and shopping I'm very happy to announce that our expedition vehicle is finally under way!

    We are calling the project ECO-ROAMER and the intention is to build it in as environmentally friendly a manner as a diesel-belching-round-the-world-20,000-pound-truck can be...

    I have taken great inspiration and learning from everyone here at ExPo, so I'm delighted that over the next several months we'll finally be able to contribute back to the community and share our build-up as it progresses.

    First a few details:

    This was the probably the hardest part. We had some fundamental requirements that limited the choices:
    • 4x4 - obviously
    • crew cab - 2 kids!
    • diesel
    • global service network
    • big enough to handle a 'big' camper body
    • available in the USA for the build
    • comfortable for HOURS of highway driving

    This eliminated several popular choices:
    • Mitsu FG - Too Small
    • Toyota Hino - Crew cab 4x4 only avail in Australia
    • MAN - Not avail in USA
    • Mog - Not ideal for highway cruising & crew cab limitations
    • GM Topkick 5500 - Duramax Not globally serviceable
    • Ford F550 - Engine not serviceable

    Which basically left the International, and the Ford F-650.

    International has a good dealer network, but we felt that CAT has an even broader parts/service network, and so we leaned towards the F-650 with the CAT C-7 engine and Allison 6-spd transmission. Both trucks can have the same Meritor axles, the same 2-piece wheels, the same MPT81 tyres, and similar load ratings.

    Finally, we hit the ULSD diesel emissions challenge, so we decided to buy a pre-emissions control 2007 or earlier truck. Finding a 'slightly used' one that matched all our criteria proved to be very difficult until we found a crazy F-650 pickup with 3,000 miles and a distressed owner in need of selling.

    We bought the truck, and will remove and sell the pick-up bed.

    Since it's a 2007 there should be no problem running it off 'mostly' Bio-Diesel, where available. (i.e. North America & Western Europe)

    Here is what the truck looks like so far...

    The bull bar was just built by Layne Wright at Denver Offroad Bumpers. He did an amazing job designing and hand crafting it all out of very light weight (and recycled) aluminum. It's being powder coated black now. I'd STRONGLY recommend Layne to anyone!

    The truck is on its way now to Tulsa Truck Manufacturing where Ron Turner and his guys are going to do the 4x4 conversion and stretch out / reinforce the frame.


    Over the past couple of years we looked at dozens of possible solutions for the camper. In the end we eliminated going with an off-the-shelf camper body like Doug Hackney's (very nice) unit. Most were too small, and there were too many unique things we wanted.

    That took us down to a short list of three custom manufacturers:

    • Unicat - Extremely helpful, but also very expensive and rigid in their designs
    • PonyXpress - Just sold, too unresponsive
    • StarTracks - Very willing to work with our designs & based in the USA which keeps costs low compared to shipping the truck back and forth to Germany.

    We're still working on the details of the design and have had some great ideas & revisions so far. The current design looks like it will be 17ft long, plus 2 single beds for the kids above the cab.

    The current plan looks something like this:

    Here's a 3D view of the interior that gives a better sense of how it fits together:

    The dinette lowers to a double bed for guests, and there is a queen bed for us that lowers from ceiling above the dinette.

    On one hand 17ft BEHIND a crew cab feels like it's going to be a huge vehicle with a turning circle the size of a football field. On the other hand, 17ft is not a whole lot of space to plan out for full-time living space for two parents & two kids!


    As I mentioned, we're trying to build the vehicle in as 'friendly' a way as possible. There are a ton of elements we've built in to the design from that perspective, but some of the highlights include:

    • Camper Shell - Made from Alucobond - 80% recycled aluminum composite
    • Solar Panels - 1.8KW of solar power on the roof
    • Cabinetry - All made from Bamboo, not "wood"
    • Counters - Made from Richlite recycled paper board composites
    • Flooring - Laminate mounted to recycled composite boards, not plywood
    • Sewage - Diesel fired incinerator to avoid dumping our waste around the world
    • Insulation - Very substantial to reduce heating/air-con power usage
    • Lighting - MR16 converted lights to low-power LED arrays
    • Fuel - No propane on board, everything can run off the bio-diesel (or regular diesel if necessary) and/or solar / generator.

    Stay tuned for more pics and details over the coming months...

    Very excited,
    Last edited by jayshapiro; 10-29-2007 at 03:22 PM.
    Jay & Alice (+ Kurt + Maya!) -
    co-founders of - "Use what you know, to Do Good as you go!"
    '97 - Landcruiser Diesel Prado - for excursions - Available for loan in Malaysia
    '07 - Ford F-650 - The first EcoRoamer -
    '06 - Horizon AT - "rent" it FREE here.

  2. #2
    Join Date
    Jun 2005
    Pojoaque, NM
    Cool designs and ideas.

  3. #3
    kcowyo's Avatar
    kcowyo is offline Expedition Portal Moderator ExPo Original
    Join Date
    Jun 2005
    Lander, Wyoming
    Congratulations on finding a truck for your build. Looks like you've found a winner.

    Glad to hear Layne is still in the bumper biz. I've heard great things about his abilities with aluminum.

    I'll be eagerly anticipating updates on this project -
    '97 Toyota T100 - some stuff and some stories....
    '89 Toyota FJ62 - fractal cruising

    currently listening to - Michael Kiwanuka "Home Again"
    recommended reading - Dead Run by Dan Schultz

  4. #4
    Join Date
    Dec 2006
    Rhode Island
    Looking forward to following your build. Thanks.

  5. #5
    Join Date
    Oct 2006
    On a dirt road, somewhere between where YOU are, and "there".

    Default Plans for the cab...

    Quote Originally Posted by Joaquin Suave

    A quick question...Do you have plans to use the cab for anything other than place for you and your family to sit while on the road?
    Yes! It's a huge space, so we've got equally big plans...

    We've got Alton doing the conversion work on the cab after Tulsa are finished with it.

    They will be:
    • Stretching out the cab by 22" and putting a pass through into the camper
    • Swapping the rear bench for 2 captains chairs
    • Mounting all 4 captains chairs on swivel bases so the front two can turn to face the kids in the rear, and the rear two can spin around to face to fold-down desks on the rear wall.
    • 'Flattening' the floor (eliminating the humps) to carry the camper floor through into the cab to make it feel like part of the living space

    Any other ideas for us?


    PS - Forgot to mention, we've still got your lock hasps on the list of items for the cab doors. We need to get those from you at some point!
    Jay & Alice (+ Kurt + Maya!) -
    co-founders of - "Use what you know, to Do Good as you go!"
    '97 - Landcruiser Diesel Prado - for excursions - Available for loan in Malaysia
    '07 - Ford F-650 - The first EcoRoamer -
    '06 - Horizon AT - "rent" it FREE here.

  6. #6
    Join Date
    Oct 2006
    Anchorage, AK
    What is the GVW of your chassis? My guess is that fully loaded "wet", with tools, parts, food, people etc. you'll be at 25-30K lb.
    What tires are you going to run? My personal choice with duals would be 13R22.5 XZLs. If you are going to try to run single MPT81s I believe their largest load capacity is 152K (7100kg/15620 lb per axle), insufficient IMHO for you. You'll need 365-395/85R20 or 425-445/65R22.5 for singles in the rear.
    Are you going to construct the camper yourself, or have someone build the shell and finish it?

    Unimog U500 with Unicat camper; diesel BMW X5 35d, diesel BJ40 Landcruiser and diesel M37

  7. #7
    Join Date
    Aug 2006
    Sugarloaf mtn, Boulder, CO
    Great choice of truck, I'm keen to see how it performs when its built. The CAT engine is a beast.


    Do XZL's have a higher load than MTP81s? Don't you run them?

    From my sidewalls:

    335/80r20 XZL 4670 at 55psi (9340 per axle).
    335/80r20 MPT81 6720 at 90psi (13440 per axle)
    365/80r20 MPT81 8760 at 85psi (17520 per axle)

    The equivalent size MPT81 has 50% more load, albeit at a higher pressure. I don't have a set of 365 XZLs to compare to the MPT81's. I personally prefer MPT81's as they run silent and dead straight, XZL's can be hard to balance and a 200+ pound tire shakes the whole truck when it wobbles (use beads or something made a huge difference for me). XZLs have one huge advantage in that they can run with or without tubes and are good in mud where MPT81's are not so good.

    It's hard to pick, they are both great tires. Sticking with 22.5 inch semi type rims is a good call, you can get tires all over the world in one form or another. 20 inch tires (mog tires) can be very difficult to get.

    You don't inherit the world from your parents, you borrow it from your children.
    1979 Unimog 416 Expedition Camper
    1974 Unimog 421
    2004 Dodge Ram 2500, 4x4, Double Cab, Cummins Turbo Diesel
    2006 25' Airstream International CCD
    2009 Harley Davidson

    Sugarloaf, Boulder, CO

  8. #8
    Join Date
    Jul 2007
    Another thought, if you do go with singles you can do a 4 wheel steering set-up. It would greatly decrease your turning radius.

  9. #9
    Join Date
    Jul 2007

  10. #10
    Join Date
    Jun 2007
    Cedar Park, TX
    Quote Originally Posted by [*
    Mounting all 4 captains chairs on swivel bases so the front two can turn to face the kids in the rear, and the rear two can spin around to face to fold-down desks on the rear wall.
    Sounds like a great plan, but I thougth you should be aware it may not be legal. I read on Sportsmobile's site that they are no longer offering swiveling rear seats due to new federal regulations:

    Addited: When I first read this I somehow assumed you were going to be building them for production. If it's just for private use, the above may be N/A.

    WRT other ideas, I like the Class Bs that have swivel seats that are used as the dinette, like RoadTrek did. However, with two kids I think the single table would be a pain. My kids are going to be in boosters for the next few years, so it's not practical for them to use the front seats during meals. When it comes meal time, I think it would be better if the front two swiveled to face the rear two, then have a small tables on each side. Kind of like two, two-person dinettes. That way the hallway is open so that the parents can come and go from the front seats. You could always have a fold-up section in the middle, if you wanted to, that would convert the two small tables to one wall-to-wall one.
    Last edited by Lynn; 10-30-2007 at 12:15 AM.

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