So, with my 14 year old son's help, we have begun dismantling it
MY BASIC PLANS:
I will start with my trailer and use the generic Benroy plans with a few mods.
I plan to lengthen the frame about 12-18 inches using the center rails as described on this site for the HF trailers. I know I need to change one of the hubs out since i had a bearing go out rather suddenly 10-12 years ago and it destroyed the hub--not having much money then (nor now, for that matter, especially with my oldest daughter starting university next week), I welded it back together and used the old inner bearing race to take up the slack that had been chewed inside the hub by the axle spindle which strangely enough was not damaged! So, even though I've put about 5000 miles on it since then, I'm going to put 2 new hubs on the axle. It currently has 8" wheels and I really like the larger wheels, so I will probably move up to 5x4.5 hubs and use at least 12" wheels.
Current plans are to lengthen the axle about 1', move the axle back, and put a 6x9 or so deck on the frame, perhaps with a 5' height just to get a bit more headroom--i did try a VERY ROUGH MOCKUP up of a 4x9 using scraps from dismantling the utility trailer and a few other scraps--not much to look at, but i got a rough idea of the space from it
I may just opt to retain the 8" wheels--only need to buy 2 hubs and not wheels then--and make the deck about 5' wide--this would bring it to the midline of the tires and if joists are 3.5" high, I can retain the current clearance on the tires without boxing the wheel out or lengthening the axle.
I've not worked with aluminum much, but may use that on the roof and hatch, and then wood on the sides. I'll sandwich it as I've seen others do to keep the weight down--i've never done that but think I can swing it.
Well, I guess that is about it for now--your advice and comments are welcome!
joe