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Unread 05-03-2012, 02:46
RoboCat2005 RoboCat2005 is offline
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Re: Cim-Sim gearbox for shooter questions

Quote:
Originally Posted by billbo911 View Post
We are using 2 BB RS550s, Cim-Sim, 26:17 chain increase driving 2 8 in. wheels. We can easily shoot from the top of the key, and even sink the bottom basket while on the bridge.
The 550s easily have enough shaft to engage the pinions. The key is to mount them with a set screw or Loctite 609 retaining compound (or similar product), or both.
Is that 26:17 is that the teeth on each sprocket? and by what you have stated guessing it speeds is up to a decent speed? We had a 32 tooth to a 12 tooth speed increase and the best we could get was during autonomous, place the robot back wheels touching the free throw and could hit the front corner of the fender.
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