[EricH]

Originally Posted by Shu Song

Hmm, I don't know why there isn't much enthusiasm about the bike motors. Our team is really excited about using the bike motors for drive. Is there something that we are not considering?

Yes, there is.
1) Are you sure that you want your drivetrain to weigh 10 pounds for just the motors? (It's 5 pounds per motor, almost twice the weight of one small one.)
2) Can you get the belt stuff off? Or are you just going to design around that?