Thread: Wheel Axle Material
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Unread 05-12-2011, 13:39
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thefro526 thefro526 is offline
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AKA: Dustin Benedict
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Re: Wheel Axle Material
Don't use 6061 Hex Axles in a Competition Drivetrain. One of the teams in EWCP (I'll let them chime in later) had a catastrophic drive failure last year due to one of their drive shafts breaking in two. (Axle was a 1/2" hex.)

7075 is what many of the West Coast Teams run, 2024 will work as well though it's not as strong as 7075 (2024 is the Standard grade for AM extended hex shafts). The Majority of these teams run either 7/16" or 1/2" hex.

I'm not familiar with 4140 Steel in Drive-shaft applications so someone else will have to chime in.
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-Dustin Benedict
2005-2012 - Student & Mentor FRC 816
2012-2014 - Technical Mentor, 2014 Drive Coach FRC 341
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Last edited by thefro526 : 05-12-2011 at 14:00. Reason: Wanted to add some info after reading Brando's post.