Quote:
Originally Posted by captndan
A starter doesn’t care what voltage you give it. 12V runs faster than 6V. Only damage to a 6V on 12 is to the starter drive. Even that is often caused by a sharp tooth on the flywheel.
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Tell that to the Model A owner holding a busted starter.
over voltage causes;
1) bent armature shafts
2) broken armature shafts
3) stretched/broken Bendix springs
4) busted/exploded Bendix
5) abused flywheel ring gear teeth
all this many times causing the starter Bendix to stick while engaged in the flywheel.
You are right though only because the starter is a short run intermittent use motor. If an engine didn't start for some reason and the operator turned the engine over for much more than 30 seconds; or the switch stuck as they sometimes do, the result would be a very hot starter.
There are too many negatives attached with 12 on 6. It may work but it isn't a good idea.