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Old 02-16-2002, 07:38 PM   #1
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Default Double shunted brushes and stock brush talk

Is this the next big thing for stock motor tuners? A driver at our track today used a double shunt Trinity E brush on his P2K2 and was rockin'. I know that the new P94s use double shunts.

BTW, is it conventional wisdom to always use a full face brush for stock motors? I have a Fantom P2K Limited Edition and they chose to use a notched brush.
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Old 02-16-2002, 07:47 PM   #2
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It is my understanding that stock motors do not pull enough power to take advantage of a double shunt. I am no big jim.. but I think that is where I read it...
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Old 02-16-2002, 07:58 PM   #3
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Believe it or not brushes had dual shunts about 10 years ago and they found out they really didnt make any improvements. It wasnt until we got down to 7-8 turn motors that it made any difference at all.
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Old 02-16-2002, 08:23 PM   #4
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the brush doesn't draw all the current from the shunts, the brush hood conducts too
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Old 02-16-2002, 10:22 PM   #5
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I have a few questions about brush modifications

I heard you can cut a portion of the brush and increase power. Is this true? If so, what portion/how big do you need to cut? Will it work for stock AND mod motors? Pictures would be nice, too, so i know how it is supposed to look like. Thanks.
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Old 02-16-2002, 10:53 PM   #6
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Quote:
Originally posted by Aurra Sing
I have a few questions about brush modifications

I heard you can cut a portion of the brush and increase power. Is this true? If so, what portion/how big do you need to cut? Will it work for stock AND mod motors? Pictures would be nice, too, so i know how it is supposed to look like. Thanks.
i suspect ppl say more power about cut brush is due to the higher rpm generated, but with less contact area between the brush and comm torque will be reduced.
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Old 02-17-2002, 12:13 AM   #7
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The shunt on the brush has a very low amperage carry capacity....and most of the amperage is transferred from the brush hood to the brush.
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