I have put plywood skins on both sides, and a friend from work is going to help me this week in modifying the HF trailer to make it 11 feet long and welding it all together. I plan to over hang the sides by 7 inches to reach a 5 foot width simular to what was done on the Zephyr TT.
My axle question is regarding the location from the rear on the HF trailer. I have played with Andrew's spreadsheet using 132" long, 40" tongue and some extra cabin weight to equal 124# on hitch at axle 44" from the rear. I realize that the HF axle carrier is built in such a way that I can slide its position on the rails, then re-drill/weld into place. With my floor overhanging the rails and over the wheel, I want to place the 2x4 floor joists away from the potential axle/wheel.
So the real question is how certain is the 44" number from Andrew's spreadsheet? If I weigh the hitch and need to move the axle, how far would be enough? 10 inches both front/rear of the axle?
Thanks,
Lee