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Originally Posted by FadyS.
We're going to the Canadian Regional. I've already asked this before in a different thread but looking at where we placed our Globes on the bot, are there any suggestions how we can fix the backdriving problem? We can hang because we put stops after this pic so that the arms are all the way vertical without slamming back on the motors themselves, but we were having trouble getting the arm at 90 degrees with the ball where the moment is greatest. It just drops back down at that point. Also, this pic shows our temporary drive train with the fisher price. Our competitive drive train is a CIM + Bosch gearbox with 15ft/s optimal output. We were having trouble getting our gearbox in time because we sent it out to get machined so we tested our bot with the fisher prices just to get it mobile for practice and testing.
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Set speed controlers on break, gear down your arm with sprocket reductions.