|
Re: Banebots RS-775 Case Short
I pulled our Banebot 775 apart before I read about the fix. The connection to the case is through the rotor assembly to the rotor shaft. A direct short can be read between the commutator and the shaft.
There is no obvious debris. I could speculate what happens during the "manufacturing process," but until Banebots is more forthcoming with specifics, I don't think we will really know. The rotor assembly is pressed then varnished, without extensive forensics, I would say the exact problem will be hard to get at. There are some balance holes machined out of the stack, so maybe that is the source of the issue.
After I reassembled, I applied the battery current across the terminal and case. There was a minor spark and now the motor is fine. We can't use it in competition since it has been disassembled, but it will be perfectly acceptable for practice.
If anyone knows if Banebots is replacing these it would be nice to know.
Dan Glenn
Mentor
Team 1622 Spyder, Poway High School, California
__________________
Dan Glenn
2015-16 FRC Chairman, San Diego Regional Planning Committee
2016 FRC Inspector, Orange County (LRI), Los Angeles, Carson Division
2015 FRC Inspector, Inland Empire (LRI), Central Valley, Los Angeles, Galileo Division
2015 FTC Mentor 10092 Green.Griffins; R&D Robotics Education
2014 FRC Inspector, Inland Empire, San Diego(LRI), Archimedes Division
2012-15 FTC Mentor Team 6565 Stuffed Dragons & 8489 Green Griffins Boys and Girls Club
2013 FRC Inspector, Central Valley, San Diego(LRI), Los Angeles, Inland Empire, Galileo Division
2012 FRC Inspector, San Diego, Los Angeles, Central Valley, Newton Division
2009-12 FRC Mentor Team 1622 Spyder Poway HS
2007-08 FRC Mentor Team 2658 Pedestrian Rancho Bernardo HS
|