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Unread 24-07-2012, 07:18
GDG 2337 GDG 2337 is offline
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FRC #2337 (ENGINerds)
Team Role: Mentor
 
Join Date: Feb 2011
Rookie Year: 2003
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Posts: 35
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Re: pic: Snap Rings Or Shaft Collars?

Took the broken axle shaft to a Metallurgist this morning, he described a normal cycles to failure type of break. Two cracks formed 150 degrees apart from irregularities in the snap ring groove and spread toward the center. He suggested changing alloy from 2024 to 7075 for added strength. We’ve played a lot matches in the Michigan District system, Championships and two off season events. Bot got a new set of pneumatic tires for IRI which increased load on an already weakened axle shaft.
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