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Unread 09-12-2007, 03:03
gburlison gburlison is offline
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FRC #0662 (Rocky Mountain Robotics)
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Re: NED HELP ON BUILDING 1 OR 2 SPEED GEARBOX

Quote:
Originally Posted by EricH View Post
Makes more sense. Is that one of yours, or did you just analyze it to death?

Edit: Yes, it is 662's 2007 robot. The discussion and original picture are here.
Edit2: Did you guys run into any issues? How much did it cost? What other info would help this team?
Team2061 sent me a PM and I provided him more details, but the short answer is that it cost about $100. It is a simple one stage gearbox using the smallest stem pinions we could find (5 tooth) and the biggest spur gear practical (80 tooth). There is one main issue with this gearbox and that is alignment. The output shaft is supported in three bearings, so misalignment can cause binding. The first year we built this design, we used solid couplers on the CIMs and this also suffered from misalignment and binding. The Lovejoy Couplers took care of any possible binding of the stem pinion gears. Just for reference, this is our first Gen of this Gearbox. http://www.chiefdelphi.com/media/photos/19829
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