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Unread 10-12-2012, 00:55
Travis Schuh Travis Schuh is offline
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FRC #0971 (Spartan Robotics)
Team Role: Engineer
 
Join Date: Dec 2006
Rookie Year: 1999
Location: Los Altos, CA
Posts: 123
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Re: Bearing Blocks vs. Idlers

Quote:
Originally Posted by BJC View Post
In 2011, 33 used a bearing block setup which pulled the chains tight. This drivetrain was around 85% efficient which is pretty good.

In 2012, 33 ran "loose" chains. We had delrin skids which we shimed up to tention the chains but not to the point where the chain was tight around the sprockets. This drivetrain was around 92% efficient which is extremely good.
How are you determining your efficiency numbers? Am I picking up that you are doing custom testing? (If so, do you mind sharing your methods?)

Thanks,
-Travis