I came across a new condition bell copilot model A trailer for very cheap. This one exactly http://www.performancebike.com/bikes...551_1126649_-1 the only problem is it didn't come with wheels. I have some other trailer wheels that don't fit, the axle connection type/length being the issue. It looks to me is that it has a spring loaded piece on the axle slot that goes into a notch on the end of the axle. Does anybody have this trailer or able to tell me about the wheels/axle type on the included wheels? or any other advice? Thanks. I will get pics up asap.