Conference vmszoo::rc

50.0. "electric motor break-in" by HOMBRE::DAUGHERTY () Fri Jun 19 1987 00:14

	Dan

	Ten hours sounds like alot, but Kyosho should know. I understand
	that a common practice is running the motor (free running, no
	gearbox, clamped lightly in a vise with styrofoam on either side)
	on two new D cells (3V?) taped together in series for around three
	hours. Keep checking to make sure it doesn't overheat and, if it
	does, disconnect it long enough to let it cool. I don't believe that
	breaking it in at 7.2V is a good idea. I haven't gone through this
	process with motors, (I was happy to see a recently purchased Reedy
	included a note indicating that it was broken in at the factory,
	maybe that's why they get so much money) but I have spent in excess
	of 5 hours breaking in transmissions.

	So sit the kid down in front of the bench with a handful of cheap
	flashlight batteries for a day, it builds character.

	It's a fast motor, have fun.


	Chris

    Save the batteries $$$....
    
    
    It seems to me that I recall reading that your battery charger can
    be used for braking in you motor.  You simply limit the current
    going to the motor.  The 3V breakin spec is most likely to break
    the motor in at LOW RPM.  Also, at low RPM the heat generated should
    be much less and this would be important during a 10 hour run.
    
    You should monitor the temperature of the motor peridically in either
    case.
    
    If you want you could use a 3V source (like batteries) to determine
    what RPM the motor runs at.  Then use your charger and adjust the
    current unitl you have the same RPM.
    
    
    Any other opinions???
    
    Todd Comins