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Google AI says the NPR gas is either 12,000 or 14,500 GVWR. F550 is 19,500 lbs.

Looks nice to me! GLWS. Some things I'd suggest you include: Location. More photos. Dimensions and weight. TC box?

They would need to key off very small circumference changes due to pressure. The radius to the contact patch is irrelevant.

There is very little stretch in the tread (steel belts)... not zero but tiny. So long as the tire bead isn't slipping and the tire isn't skidding on the ground, then the tire circumference dictates how far you travel per wheel revolution. The radius at the contact patch is the wrong part to be...

I bought a cheap battery with BT last fall, but it doesn't seem very accurate regarding power. A calibrated shunt and meter are needed I think. The one I bought was ~$35. You need to measure energy used over time, not just what it consumes when it kicks on. For room temp conditions a portable...

Nope. Run a tape measure around the circumference. That's how far your rig goes with one wheel revolution, and it doesn't matter if your tire is nearly flat or 80 psi.

That was the 1st thing that occurred to me also, but... a lot of trails have quite a lot of side tilt which would definitely make a tip over with a gust more likely.

Like Ram and the 3.6L V6 they'll likely use an existing engine and it won't be dinky. So compared to the diesel truck, the hybrid loses the transmission, but adds a generator, large battery system, electric motors, and the electronics to make that all play together. As you said, the engine will...

Oddly that doesn't work. The tire circumference is the same regardless of PSI.

An inch is nothing. And that is over the whole width of the habitat rather than at the rails? What truck is this? I measured mine by driving across a ditch at an angle so that all the weight was on two opposite corners, which would be the worst case.

With 3 or 4 point I think you'd need to twist the frame under the fixed points before you'd get lateral motion like that due to the mounting. Probably it's just suspension and tires. So strapping down the suspension and airing up bags (if you have them) like Idasho mentioned, and also airing up...

Aren't there going to be induced stresses even then? Middle pivots will help some, but there will still be misalignment. The question is always how much these loads are between the chassis and subframe, and do the mounts adequately spread them out and handle them adequately for both the chassis...

I just skimmed through it, but I didn't see them ever showing what was actually moving. The suspension will do that when you are slammed by crosswinds. I disagree about that being simple or easy. You'll still be transferring stress to the subframe and habitat, but it will be less. And I've seen...

Which end is fixed, and are you doing a pass-through?

No, the subframe doesn't twist, but it does tilt. The chassis frame twists. 4 point just means your fore-aft tilting pivots (nearly fixed, not much tilting at all) are in the middle (spaced wide) and the side to side tilting pivots are front and back, and in the centerline. The middle of the...

Where is it located? This whole thing looks and smells like bot to me... :poop:

Unless your habitat is very big and heavy, I'd recommend using poly isolators like I did. Cheap (~$17 per by Energy Suspension), and very effective... so far. Not a bit of floppiness that I've noticed, they allow enough relative movement, and pivot easily too. The ES guy said they'd support a...

Are you accepting orders?

(y) That's how I usually do it too...

Nah, don't worry about the weight, it's a pittance in the grand scheme... a tiny % of your total momentum. ;) Wow! So much good info and photos. Thanks for taking the time to post! I have a tire clearance question. Your recent wheels are 17" with 0 offset (60mm more outboard than stock), with...