[roboticscom13]

We used nylon sprockets for our robot's drivetrain last year. We got into pushing matches and we ran at high speeds and they were perfectly fine. If you are concerened that much about wieght i would say use the nylon sprockets. We used steel sprockets in the '02 competition and they were exceedingly heavy even machined out. We also had a couple of them fail. We incorporated nylon sprockets in the same drive train but for last year and they worked perfectly. I would use nylon sprockets for the drivetrain, and then like alreadly said if there are high ammounts of torque needed then you should do calculations to see if it would be beneficial to go for steel sprockets.