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Unread 06-04-2014, 17:54
Travis Schuh Travis Schuh is offline
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FRC #0971 (Spartan Robotics)
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Re: Main breaker tripping, dead CIM

Quote:
Originally Posted by Pat Fairbank View Post
Perhaps it's time for FIRST to consider distributing a higher-amperage breaker in the Kit of Parts? With all the motor power available to teams now, this seems like a pitfall that a lot of teams are falling into.
Or perhaps it is time for teams to back down on the number of motors they stall at the same time. Our experience with 6 CIM drive in 2013 was that we lost more matches due to blowing the main breaker than we won by having that little extra in our drive train. We went back to 4 CIMs in the 2013 off season and this year and have been very happy with the results (IE no blown breakers, just fine pushing and speed). The extra 2 CIMS in the drive isn't really adding 50% more performance. I would be interested to see some testing/analysis (which is on our todo list) of how much of a difference 6 CIMs vs 4 CIMs makes on performance given the limitations of the battery.