[thefro526]

Originally Posted by squirrel

we made our own mechanism gearboxes using older FP plastic gears and polycarbonate side plates. Very easy to make with minimal shop equipment....

Mr. Forbes' post made me want to note something, when using smaller motors like 500-series, 700-series, etc, you can get away with using Polycarb, Delrin or other strong plastic Side-plates depending on the application. On my former team, all of the aux boxes for their 2012 robot have Delrin side plates and are holding up just fine.