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Old 10-23-2018, 09:27 AM   #22
5851a
Senior Member
 
Join Date: Oct 2014
Location: NE Iowa
Posts: 1,663
Default Re: 6V to 12V Flat Head V8

Quote:
Originally Posted by Mike51Merc View Post
I'm pretty sure nobody has collected data on the subject, so here's an anecdote or two:

I have a '51 Merc running 6V.
My buddy has a '51 Ford running 12V.
My buddy has gone through about 5-6 Bendix drives in the last ten years. I haven't replaced any.

My theory is that the 6 volt starter essentially runs at twice its intended speed, while an actual 12 volt starter will run at a lower speed.

It's like putting a 6V light bulb in a 12V supply, compared to putting a 12V bulb in a 12V supply.
The 12V on a 6V really makes it seem like they hit the ring gear hard.
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