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Old Oct 27, 2012, 10:51 PM
mjsas is offline
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Joined Nov 2007
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What do you mean by 'short time'.

I found that a standard automotive windshied washer pump will run a long time at 12 volts but at 24 volts the brushes get hot and break apart in a few seconds. At 18 volts they run OK and make a good fuel pump for a small flame thrower.

Otherwise there is no reason brushes cannot last thousands of hours at any voltage.
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