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Re: 6 volt starter with 12 volt system
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Posted by lee on January 17, 2005 at 10:19:49 from (24.24.95.246):
In Reply to: 6 volt starter with 12 volt system posted by Darin S. on January 17, 2005 at 09:54:44:
from long ago you may have learned: volts = amps x resistance or, rearranging things to better fit our purpose amps = volts / resistance regardless of what the resistance is (starter resistance is very small by the way) the resistance hasn't changed because, uh, you haven't changed the starter right? The volts are doubled like this (6 x 2 = 12) so the formula simply says the amps are doubled. Most notably, all this means is it'll spin like never before and burn up rather quickly if you grind and grind and it doesn't start. If it doesn't start right off, fix the problem. The starter will last a good long while assuming it is in good shape and you don't abuse it. The doubled amps are harder on brushes and commutator and they build heat in the armature and field coils more quickly.
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