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Unread 25-04-2016, 08:59
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Re: Calculating optimal weight efficiency ratios

Quote:
Originally Posted by sanddrag View Post
In my 15 years in FIRST, most of which consisted of reading Chief Delphi and designing gearboxes, and my 5 years spent studying mechanical engineering, I have never once heard the term "bull gear." Is this some kind of new slang or do I just live under a rock? Would someone care to fill me in?
Bull gear is an old term. It is the larger of the two gears in a gear set. The smaller gear is called the pinion. I suspect the term has its roots in the conversion from animal to machine power. IE the high torque output shaft would have a large slow turning "bull gear" on it.
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