06-10-2010, 13:32
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no bag, vex only, final destination
AKA: Pinecone
 FRC #0228 (GUS Robotics); FRC #2170 (Titanium Tomahawks) Team Role: Mentor
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Join Date: Dec 2008
Rookie Year: 2006
Location: Glastonbury, CT
Posts: 7,601
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Re: pic: Broken Output Shaft
Quote:
Originally Posted by JamesCH95
Those grooves cut into the shaft are a HUGE no-no is shaft design. It probably didn't help that there was a hole drilled through the middle, but those grooves are big stress risers where the shaft is experiencing the most stress.
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Funny, that's how tons of teams have held on their wheels, gears, sprockets, and everything for years. I'd probably argue that a keyway increases stress in a shaft more than a snap ring groove.
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Learn the theory in the classroom and pick up the practical through clubs (FIRST, mini Baja, SAE)... you really need the scale balanced in the middle - Greg Needel [more] 
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