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10-28-2012, 02:32 PM
| #1 |
| Quarry Creeper Join Date: Nov 2010 Location: Montreal
Posts: 308
|  3S lipos too hard on brushed motors?
my firend and I got both Holmes hobbies torquemaster motors, he run his on 3S and I run mine on 2S...he told me today that he has to clean up the contacts on the rotor before almost every runs he does because they have black spots on them..(like spark spots) I checked mine just for fun and they are clean as they could be...we both run at the same places and we never go in the water....could it be the 3S batteries too hard on the motor?
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10-28-2012, 02:35 PM
| #2 |
| I wanna be Dave  Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
| Re: 3S lipos too hard on brushed motors?
Most people here run 3s on their brushed motors, some run 4s or higher. I doubt that is what is causing his problems... I would have him contact holmes and see what he says although I bet he will see this and put in his comments. |
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10-28-2012, 04:00 PM
| #3 | |
| I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Re: 3S LiPO's too hard on brushed motors? Quote:
  Not sure what the OP issue is unless they're running in mud or lots of dust/sand.  | |
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10-28-2012, 06:13 PM
| #4 |
| Suck it up!   Join Date: Mar 2008 Location: Arkansas
Posts: 11,652
| Re: 3S lipos too hard on brushed motors?
I ran my TM for nearly a year before I checked the brushes or pulled it apart to clean it out. All that time it was on 3s.
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10-28-2012, 08:53 PM
| #5 |
| Rock Stacker Join Date: Jan 2009 Location: halfway
Posts: 79
| Re: 3S lipos too hard on brushed motors?
check the timing! sounds like that may be the problem.
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10-28-2012, 09:15 PM
| #6 |
| Quarry Creeper Join Date: May 2012 Location: My own personal Heaven
Posts: 212
| Re: 3S lipos too hard on brushed motors?
I have this same problem, mine is timed according to JRH's recommendations. I ran it for the first time today on 3s and it crapped out 1/3 through a run. :(
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10-29-2012, 09:08 AM
| #7 |
| RCC Addict Join Date: Apr 2009 Location: Token's life matters
Posts: 1,836
| Re: 3S lipos too hard on brushed motors?
I have been running one pair of brood motors on 3s and 4s for 4 years without so much as opening the can or looking at the brushes. No issues out here.
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10-29-2012, 09:15 AM
| #8 |
| owner, Holmes Hobbies LLC  Join Date: Nov 2004 Location: Volt up! Gear down!
Posts: 20,290
| Re: 3S lipos too hard on brushed motors?
3s is harder on motors than 2s. I would suggest that the timing is checked and that a clean motor is a happy motor.
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10-29-2012, 10:08 AM
| #9 |
| Quarry Creeper Join Date: Nov 2010 Location: Montreal
Posts: 308
| Re: 3S lipos too hard on brushed motors?
thanks for all the infos! I will check my timing as well..I dont think I did anything when I got the motor...I just use some air to clean it and that's all for now...i'll tell my friend about the timing too!
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10-29-2012, 10:30 AM
| #10 |
| I wanna be Dave Join Date: Apr 2007 Location: Arlington, Washington
Posts: 2,303
| Re: 3S lipos too hard on brushed motors?
Might wanna check gearing....if you guys are running the same gearing, but you are on 3s, you should be running a smaller pinion or bigger spur.....motors geared wrong will burn up faster.....sometimes they will blow up. Later EddieO |
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10-29-2012, 03:01 PM
| #11 |
| Pebble Pounder Join Date: Jun 2012 Location: Canada
Posts: 179
| Re: 3S lipos too hard on brushed motors?
I heard this somewhere around these forums.... gear down, volt up...  |
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10-29-2012, 10:04 PM
| #12 |
| Rock Stacker Join Date: Mar 2012 Location: longview
Posts: 84
| Re: 3S lipos too hard on brushed motors?
Hows he cleaning the comm? He should have it cut and install new brushs  Gear down a little |
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11-01-2012, 07:19 PM
| #13 |
| Rock Stacker Join Date: Feb 2012 Location: Kelso,wa
Posts: 69
| Re: 3S lipos too hard on brushed motors?
Maybe put some new brush springs on. If its ever been overheated, spring tension will be lower thus causing the brushes to bounce and arc on the comm. before you know it there will be crud between the brush and comm making a poor path for electricity. Just a thought and good luck.
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11-01-2012, 07:33 PM
| #14 |
| RCC Addict Join Date: Dec 2006 Location: Oak Ridge, TN
Posts: 1,141
| Re: 3S lipos too hard on brushed motors?
How is he cleaning the comm? If he's using sand paper or something similar he's probably creating his own problem.
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