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Unread 26-03-2008, 22:27
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
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Re: drive train wearing out?

Andrew,
Come and find me early in Atlanta. I will be one of the Lead Inspectors so I should be easy to find. There is a lot of evidence that points to an electrical problem but the drive motors sound like they have been stressed. 150 degrees is likely 30-50 degrees cooler than the armature temp. These motors do start to short windings which limits output power with extreme temperatures. Be ready to replace in Atlanta. If they are shorted, they will be putting an increased load on the battery that was not there during practice. However, if all problem motors are driven from the 40 amp block, that is the first place to look.
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.