Cord

I had a old F800 and drove it off road a couple of times. Damn thick sucked! It was so wide it wouldn't fit between trees. Turning radius was OK, but it was so long you'd be doing constant 3 point turns. Top heavy is an under statement! Honestly, I'd do a bobbed M35. Those trucks are too cool.

Wrong brand, but this is simular: http://milwaukee.craigslist.org/cto/4252232447.html

Kronwalski

That would be dangerously top heavy to off road with, especially with a shortened wheel base. Not advising you against what you want, just pointing it out.

Team Canada

I guess if a 750 is a little too big, you could "downsize" to a 650

1997F150XLT

Those kind of air bags hate extension. Just ask any driver who has dumped it in reverse with the brakes set.
Was the F800 a 4x4? I know it will have some limits because of its size. I think that most of the "top heavy" is preception. Most of the weight is below the frame rails. The only thing above the rails is the cab and the upper part of the engine block. Unless I build up a ton of stuff like I was talking about on the rescue rig most of the weight is slung under the frame rail. If I go the toy route I would just do a light duty flatbed or maybe a super duty truck bed.

I know that it is tall but most of the weight is under the frame. Isn't it?

1997F150XLT

So I have been doing some more research. Mostly on the top heavy aspect of things. I found some information on the curb weight of a F750. Regular cab, 200" wheelbase, with the strongest frame, Cummins® 6.7L, and Allison 5 speed automoatic comes in at 10,300 LBS. Add about 1500 LBS for the front drive axle, and another 300 for the the transfer case. So lets say we are up to 12,000 LBS. I found the specs for the the axles and they add up to about 3700 LBS. So whats left is around 8300 LBS. I figure that at least 4000 lbs of that is frame, chassis parts, transmisson, and engine. So that would mean that maybe 7700 LBS would be placed at or below the frame. That would mean only 4300 LBS would be above the frame. Would that still be considered top heavy? Should I be looking at figuring weight above the frame, or should I be looking at figuring weight above the axle center point?

Crab Balls

Damn! That thing looks amazing!! I would hate to have to top off those fuel tanks.

ThatBlue4x4

I saw the Jack Links F650 in person the other day. Thing was really cool!

All Hat No Cattle

This might help you calculate CG. Of course, you need to know the specific vehicle to calculate its CG.

http://www.worktruckonline.com/chann...x?prestitial=1

1997F150XLT

That was a good description of how to calculate CG. I found a found a CG calculator and punched in a few numbers. Says the center of gravity is at 52 inches vertical. That would be right at the top of the frame rail. That is with judging just the Chassis and the cab with no box or anything. Thats about where I was guessing it would be. 52" is pretty high up but I'm guessing that it is somewhat relative. I think it is pretty low considering that the track width is 96".

fringe_remnant

Friend of mine runs one up in Vaughan for towing. Nothing stops him.