What are the chances of one of you building a rear rim that is close to a motorcycle rim. What I mean by that is a wheel with real Bearings and maybe even a grease nipple. I picture an Aluminum hub with skateboard style bearings pressed in and while we're at it, an axle that does not bend! I'd bet that we would go faster as well. I am tired of having to remove my rear wheel every two months to tighten them up knowing that they will stretch again (or whatever happens). I don't know if it will help but I'm ready to drill a hole and install a grease nipple in my rim.