From the Xtracycle website:
With a bike trailer, you'll leave it at home because you prefer the way your bike rides without it, then later wish you had brought it along.
Great, I'm sold! Except... College... Money.... Oh yeah, lackofcash-itus :( Here's my $10 solution for a great idea!
Sorry Xtracycle guys - At the moment, I just can't afford to pay for the engineering :(
Step 1: Materials
Grade 8 Bolt
Step 2: Disassemble and Test Fit
Step 3: Attach Swing Arm to Bike Frame
To align the swing arm, attach the wheel and fold over as shown - the wheel should be in line with the seat tube. Once aligned, tighten the swing arm.
Step 4: Frame Support
I drilled the holes.... With a Dremel. Even that angled hole. Terrible, I know, but I made due with what I had.
This support bar is held at the kickstand mount with a half inch grade 8 smooth shank bolt. I had a grade 5 full threaded bolt at one time - it failed (bent). It was my fault, I didn't take the time to do the engineering (which I was capable of) and I would have easily seen that it was not sufficient.