[asid61]

So I've been thinking about making a turret for the offseason, to train the new one-year vetereans. We have around 3 or 4 working drivebases at this point and I think it's time to try something new that will teach them CAD and gearing and such.
I am planning it out and have run into a problem already: how do I turn a giant turntable? Originally I planned to use a large sprocket, but the Vex sprockets only go up to 60 tooth #35. McMaster is larger but more expensive and requires more machining.
How have teams turned large turrets in the past?