Quote Originally Posted by Drew View Post
I found that when the 1up rack was tightened, whichever wheel was tightened second would “roll” a little bit and effectively shorten the wheelbase of the bike. The bottom of the tire, that is in the 1up tray, does not move. When the clamp was raised against the tire and “squeezed” back to tighten the bike, the clamp would push into the tire a little and roll the wheel back. I thought this would be a little hard on the steer tube and bottom headset race, to leave it loaded for a long period of time.
I'm currently using my trays as bike stands (since the hitch assembly was bent from the rear-end collision), so I just tried to recreate what you describe. Imo one would have to exert a lot of force on the retention arms in order to shorten the wheelbase of a bike or to put strain on the headtube or headset. When I close the retention arms, there is just enough pressure to hold the bike stationary, i.e., so it can't roll forward or back on the tray. I would be curious if anyone else who has a 1Up has a different experience.