OT:building wooden flat bed

I'm putting a wooden flat bed on the back of a 1988 f350 crew cab. I'm wondering how much clearance I should have between the bed and the rear wheels. Right now, there will be about 6.5 or 7 inches clearance. If I build it up another level, I guess it will be about nine-- I plan on sometimes putting about a ton-- maybe ton and a half on the back sometimes-- do you think the lower clearance will be OK ? Thanks
 
Measure the distance between the axle and the rubber stop on the frame, then allow for the largest tires you will ever use. It may never be loaded that heavy but I know it is embarassing to burn a tire on a Flat you built yourself. Just saying.
 
Should be fine. I did as as previously stated and had no problems. My rise was about 4 inches. Did some fencing work for a friend in exchnge for some oak. Turned out nice, get alot of compliments. Used linseed oil for the finish.
 
350's have overload springs, generally- they'll go down to the overloads with about a ton of weight, but don't go down much after that. If the rubber nub on the overloads is about 4" from the frame when empty, I'd think the 6-7 inches should be enough, for the loads you're talking about.
 
Agree with WGW. Distance from top of axle to the rubber bumper will give you an idea. Don"t forget that the bumper actually gives too. So I would add half the height of the bumper to your other measurement.

Now you said a ton or ton and a half, I doubt you"ll have any worries.

Rick
 
You actually need a bit more than what they are saying if you drive in fields etc. When you cross a ditch etc the axles articulate or get crossed up. The tire comes up higher than the spring because the opposite side is drooping into a hole.
 

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