Well I deliver newspaper. On an average day, that's around 80 lbs. On days when the papers are thick as hell, I think I'll be looking at 180-200 lbs.
I understand why you would think the aluminum tubing would not be able to support 200 lbs. My thinking is that I can maybe fix a vertical pole on the position of the wheel (somewhere near the middle), and use a rope to tie the top end of the pole to the 2 ends of the trailer, like a suspension bridge. The problem with that is that almost all rope is somewhat elastic, and when we're looking at about 60 inches of rope, I'm having serious doubts.
There are trailers I've seen online that are built into a box, or a bridge type. The problem with that is I don't know welding, and I'm guessing the service isn't cheap either. Bolting has its limit as well, considering I don't want my trailer skeleton to look like swiss cheese, full of nuts and bolts.
Also, instead of 1/3 2/3, why not 1/2 1/2? (referring to fietsbob's suggestion)
Last edited by mrund3rd09; 05-16-11 at 01:59 AM.