23-08-2012, 18:46
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Standing on the Shoulders of Giants
AKA: Garret Smalley
 FRC #0691 (Hart District Robotics) Team Role: Mentor
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Join Date: Dec 2009
Rookie Year: 2008
Location: Goleta, CA (UCSB)
Posts: 203
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Re: pic: Single Speed Gearbox Iterations
Quote:
Originally Posted by sanddrag
The benefit could be a better running gear mesh. I believe a 12 tooth gear has an undercut at 20 pitch and 14.5 degree pressure angle, while I think a 14 tooth is out of the range requiring the undercut geometry. That said, for typical FRC applications, I'd still go with 12 tooth gears, since they fit through the hole, as others stated. And yes, I too highly recommend a close-fitting .75" hole to locate the motor.
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Would a better running mesh mean more a more efficient or quieter stage in the gearbox? And would there a mathematical method of calculating at what point there is an undercut?
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7 Years of FRC
 "You students are at the top of the mountain, at the pinnacle of success, and what is it that you do?
You become the future guides to help others climb the mountain."
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