Thread: DC Motor and Gearing
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Unread 21-03-2008, 19:26
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Re: DC Motor and Gearing
Yes, gear ratios add like you stated.
WRONG - Gear radios multiply. Oops.

You can use the last 40 tooth gear for the output, or another one of the same size (but why?) for 1:1 if you like.

The peak current from a battery may surprise you, but I^2R losses in the wiring will keep that peak current well below the theoretical 92 Amps. The 12 volt lead-acid battery FIRST uses can deliver 720 Amps for 3 seconds... So a small lead-acid will run your starter no problem.

Don
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Last edited by DonRotolo : 22-03-2008 at 16:17. Reason: wrong ratios...