Generator out put voltage

AA Ford Discussion Group relating to the repair and restoration of your AA Ford.
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Posts: 646
Joined: August 11th, 2013, 4:25 pm
Body Type: 82-A Platform
Model Year: 1928
Location: Hamilton, Mich.

Generator out put voltage

Post by KimVanOrder » June 27th, 2018, 4:48 pm

My truck has a generator that probably came off of an old tractor. There is an adjustable brush, and I was wondering how to set the voltage. I know I can slide it toward a + or - to adjust, but how is the correct setting determined? Via output voltage and if so what is the correct voltage?
Or should I just leave it alone? I do put a tender on the truck every time I park it.
Dec. '28 AA

Bob C
Posts: 1321
Joined: April 24th, 2003, 11:50 am
Body Type: Mail truck, Stake tr
Model Year: 1931
Location: SO CAL

Re: Generator out put voltage

Post by Bob C » June 27th, 2018, 5:54 pm

The battery is what regulates the output voltage in the old Ford three brush generators.


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