The Ford Barn

HDowse · 04-15-2016, 08:22 PM

My 1940 has a stock 6v generator with Ford AAR-10 stamped on the side near the field post. A local friend who owned the repair garage in town gave me a refurbished unit with Ford V-10 stamped in the same location. What is the significance of these marks? Merely model #s or do they refer to output strength or something else? Nice to have a 'new' spare.

deuce_roadster · 04-15-2016, 09:34 PM

I believe a 40 generator has a U to indicate 40 and the number after the letter is the month the generator was produced. If I am remembering this right, the V would indicate 41 and the 10 would be October. However, any generator from 40 to 48 would work if you add a ground wire. The 40 only has 1 post on the side later ones had 2, the second being for a ground.
Kube can tell you for sure on the markings.

Kube · 04-16-2016, 07:29 AM

Deuce is correct with the information he supplied.
It's possible to have a generator that was produced in 1939 ("T") but most likely it would have a month stamp between July ("7") and December ("12"). The generators produced in 1940 had a ("U") stamp and to be period correct, a month stamp between January ("1") and August ("8").
That "AAR-10" is most likely a rebuilder's identification. Regardless, your generator stamped with a ("V-10") was manufactured in October, 1941. Too late even for 1941 installation, this most likely would have been installed upon a 1942 model.

HDowse · 04-16-2016, 07:52 AM

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Thanks Deuce and Kube. Just nice to know what's on the car as I try to figure it all out.
Hunt

04-15-2016, 08:22 PM	#1
HDowse Senior Member Join Date: May 2010 Location: Hancock, New Hampshire Posts: 375	1940 generator markings My 1940 has a stock 6v generator with Ford AAR-10 stamped on the side near the field post. A local friend who owned the repair garage in town gave me a refurbished unit with Ford V-10 stamped in the same location. What is the significance of these marks? Merely model #s or do they refer to output strength or something else? Nice to have a 'new' spare.

04-15-2016, 09:34 PM	#2
deuce_roadster Senior Member Join Date: Oct 2011 Location: Shelton, WA Posts: 3,800	Re: 1940 generator markings I believe a 40 generator has a U to indicate 40 and the number after the letter is the month the generator was produced. If I am remembering this right, the V would indicate 41 and the 10 would be October. However, any generator from 40 to 48 would work if you add a ground wire. The 40 only has 1 post on the side later ones had 2, the second being for a ground. Kube can tell you for sure on the markings.

04-16-2016, 07:29 AM	#3
Kube Senior Member Join Date: May 2010 Location: Wisconsin, USA Posts: 9,007	Re: 1940 generator markings Deuce is correct with the information he supplied. It's possible to have a generator that was produced in 1939 ("T") but most likely it would have a month stamp between July ("7") and December ("12"). The generators produced in 1940 had a ("U") stamp and to be period correct, a month stamp between January ("1") and August ("8"). That "AAR-10" is most likely a rebuilder's identification. Regardless, your generator stamped with a ("V-10") was manufactured in October, 1941. Too late even for 1941 installation, this most likely would have been installed upon a 1942 model. __________________ "I can explain it for you. However, I can't understand it for you".

04-16-2016, 07:52 AM	#4
HDowse Senior Member Join Date: May 2010 Location: Hancock, New Hampshire Posts: 375	Re: 1940 generator markings Sponsored Links (Register now to hide all advertisements) Thanks Deuce and Kube. Just nice to know what's on the car as I try to figure it all out. Hunt