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I would love to see the wind tunnel tests. Heck you might even contact Airtab and see if they will kick in some help. That type of result would be a huge marketing tool for them.

There are lots of videos and testimonials out there. There is no doubt that the science is sound. I have yet to see a well done comprehensive study on rigs like ours. I do plan to try these devices though. There are a number of devices out there, but they are not created equally. The...

I have been running the Discoverer S/T Maxx and it has proven to be a good tough tire. I have noticed a significant hit to power on hills and towing though. The Maxx weighs 58# I believe. My next tire will be the older Discoverer S/T in load range D instead of E. That tire comes in at 49#...

A reference point for fuel economy and gearing: My stock 2007 AC manual transmission truck, with a heavy duty Leer shell got 18mpg on the highway. Now my truck with 4:56 gears and 33's, gets 15-16 on the highway. It is 1,000lbs heavier and the rotating mass of the tires has gone up 78 pounds...

One plus for the ball bearings is that they will run in the bed grooves, unless you have a mat. That reduces the volume loss a good bit.

Hardboard/masonite as suggested. Also these offer interesting possibilities: https://www.harborfreight.com/1-inch-roller-ball-bearing-67060.html

One suggestion might be to create a cradle with two stubs and two receivers. The cradle will have to be substantial. This would be a custom build, but I would not consider mounting a 25,000lb winch on a singe hitch stub. I know it seems feasible to move this winch yourself. The first...

Not the same thing, but similar idea. It seems to be well thought out: http://theautobolt.com/buy-online/

You may have noticed…that the name of this forum has changed! We are working with Portal to refine the focus of this section to become a great resource for anyone looking to build or design a new overland vessel, regardless what shape that may take. We plan to contribute a good bit of content...

Greetings Brad and Julie! Welcome to the Expedition Portal! We spent a good bit of time with Brad and Julie at Expo West. Very nice people, with very innovative ideas. From everything they said to us, they are committed to building a very high quality product. I'm looking forward to seeing...

Tern Overland would like to introduce our Canadian customers to John and Christina of Nomad Vanz, in Vancouver, BC. Nomad Vanz will now be handling all of our Canadian inquiries and orders. This move will result in better service and lower pricing for our Canadian customers! By moving product...

I'm not aware of any windows that open all the way, except Windoors. They are really just geared toward camper shells. Any window that opens like that will dump water inside if it is ever left open in a rain.

Thank you Sir! We are happy to support Expedition Portal! We are lucky enough to be based in Prescott, AZ, where we can visit with the people who work so hard to put all of this together and keep it running. I see that Brian was up after midnight getting our introduction posted. Thank you...

Rumors of our demise have been greatly exaggerated :cool:. We are doing very well thank you! We just moved into a new facility, doubling our square footage. Our windows are similar to items sold in Australia, but are not the same. Our windows are built to our specifications, which are very...

Welcome to Ex Po! compressors have been debated to death, but here is a thread to start with: https://www.expeditionportal.com/forum/threads/air-compressor.196875/ There are links in the thread to other discussions. I have been using a Puma for 7-8 years and like it very much. The MV-50 is...

I don't know whether a winch is in the picture at all, but aside from getting you unstuck, a winch makes a good short distance crawler gear.

I think the first step to dealing with weight is in your mind. I say this from a lifetime of backpacking, most of it solo in rugged and remote areas. My very first packing trip, at age 14, was 4 days and I carried a 75lb+ pack. By age 19 it was 38 lbs. Today my 5 day pack weighs 19lbs 8oz...

Yes. If your rear tires could track exactly behind the fronts, it would not be a big issue. The reality is that your rear will be pushed back and forth TRYING to track behind the front, pushing the truck off line. Then you correct the wheel, loosing a bit of traction in the front, and the...

I think it is a situation best avoided for this reason: Getting through mud and snow depends on directional stability. If you have directional stability you can use more power and maintain more momentum. Having an unmatched track definitely creates directional instability in soft stuff. When...

One person at rest loses about 3 cups of water per 24 hours from perspiration and respiration. That's a cup of water per person overnight. Add that to your list.