michael
Flight lieutenant
Posts: 66
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Post by michael on Sept 8, 2007 4:23:31 GMT 1
I'v been hearing a lot about and I have no idea what it is. Could sombody please tell me how to do this and what it helps. Thank you.  |
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Post by bigtone on Sept 8, 2007 5:44:10 GMT 1
Basically, a new motor comes with flat brushes and a round commutator. the idea is to wear the brushes down in such a manner that you have a curved surface (and thus more contact area) at the commutator/brush interface. if you try to break it in by simply flying it at full load, you create a lot of arcing which pits the surfaces and degrades performance. note that you must break in the motor prior to using it. if you've already pitted the brushes and commutator, it is too late. you then have to settle for what you have, or buy a new motor. you can expect this procedure to improve power output 10-30 %.
Ideally you'd like to run the motor at about 1/3-1/2 it's rated voltage with no load (without prop) for an hour or two. All you really need for a typical motor is 2 alkaline d cell batteries and some spare 12 gauge wire. simply hook the batteries up in series so you have a 3 volt power source and hook the wires to the appropriate terminals on the motor. Let the motor run in a cup under water until the batteries are dead. Then let the motor dry and lube bearing points and presto...you have a broken in motor.
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michael
Flight lieutenant
Posts: 66
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Post by michael on Sept 8, 2007 6:16:36 GMT 1
Basically, a new motor comes with flat brushes and a round commutator. the idea is to wear the brushes down in such a manner that you have a curved surface (and thus more contact area) at the commutator/brush interface. if you try to break it in by simply flying it at full load, you create a lot of arcing which pits the surfaces and degrades performance. note that you must break in the motor prior to using it. if you've already pitted the brushes and commutator, it is too late. you then have to settle for what you have, or buy a new motor. you can expect this procedure to improve power output 10-30 %. Thanks. but do I have to do this to brushless moters Ideally you'd like to run the motor at about 1/3-1/2 it's rated voltage with no load (without prop) for an hour or two. All you really need for a typical motor is 2 alkaline d cell batteries and some spare 12 gauge wire. simply hook the batteries up in series so you have a 3 volt power source and hook the wires to the appropriate terminals on the motor. Let the motor run in a cup under water until the batteries are dead. Then let the motor dry and lube bearing points and presto...you have a broken in motor. |
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