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Old 08-12-2008, 12:48 AM
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How many volts to Field ?

I am having problems with charging on '63 Mercury. I changed the generator brushes that were worn out, but still I am not getting too much charging. Battery is 12.4 volts, when the car is running then 12.6V. When I measure the voltage on Field pole, then I find out that regulator is giving only ~1V there. Is this OK? How much would be normal field voltage?

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Old 08-12-2008, 07:47 AM
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you have a bad regulator or a bad gen, OR the gen needs to be repolarized.

Take it to a local advance and if the guy doing the testing has any brain at all he can test it with and with out the regulator. To tell you witch is bad.

This site may shed some light on how it works and how to test it.
http://www.nls.net/mp/volks/htm/gen.htm

Last edited by Holder350; 08-12-2008 at 07:57 AM.
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Old 08-13-2008, 12:56 AM
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At idle, when the charging is low, should there be full 12V on field?

And, can anyone point out some brand and type of electronic regulator that is for DC generators? Or some web page where it is changed from mechanical to electronic.
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Old 08-13-2008, 06:19 AM
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At idle you should be CHARGING so you should have OVER 12V at the field.

(more like 12.8-13.5)
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Old 08-13-2008, 12:16 PM
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any/all of the (50+) Mustang resto-parts houses carry generator regulators...($35-$50?)

NPD/Mustangs Unlimited/CJ's Pony parts/Dallas Mustang just to name a few.....

goooogle: 1964 mustang restoration parts (it had a generator)......fair chance there is a mustang parts house close to you
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Old 08-14-2008, 03:49 AM
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Checked all these places, nowhere was any Electronic regulator for DC generator. All electronic ones I find is for alternators. So, has anyone done it, put an electronic regulator to old style gen?
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Old 08-14-2008, 07:05 AM
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they all do carry gen regulators, no idea why you didn't find them....

(I looked it up on MU just cause I like how their catalog is set up online...)

here a link to the gen regulator:

http://www.mustangsunlimited.com/ite...atKey=EMUSTANG

a SS regulator can have more operational function features like voltage ramp up or time delay needed on some cars....

but....

functionally for controlling voltage and amps a electromechanical is just as good....
(more than once I have removed the cover on a EM reg to verify the relays contacts are infact pulling in and clean,,,which you can't do on a SS)

here's a 64' Falcon/Mustang generator charging system diagram that might help...

http://www.hammar.dyndns.org/~djhamm...1964/1964g.jpg

Last edited by red65mustang; 08-14-2008 at 07:14 AM.
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Old 08-15-2008, 01:47 AM
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Well, there really isn't "Electronic" regulator for "DC gen". All are mechanical or for alternators. Your linked one states that it is for alternator.
Somtimes it is mentioned that electronic regulators are being used, but I can't find any.
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Old 08-15-2008, 07:06 AM
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(I goofed and "cut" the 64' code dated regulator above the gen regulator to make a link...dumb mistake because it obviously has 4 terminals....duh!)

here's a link to the gen reg:

http://www.mustangsunlimited.com/ite...atKey=EMUSTANG

VW's did use a Bosch SS voltage regulator on the VW generator from around 65 to 70'(?CRS)...so they do exist.....

I don't know if they are still available or compatible with your gen....

Last edited by red65mustang; 08-15-2008 at 07:22 AM.
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Old 08-15-2008, 07:33 AM
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All a regulator does is look at system voltage then provide enough field voltage to maintain the system voltage at the setpoint. This is the same for alts or gens.

So, in my mind, the gen wouldn't know or care if the regulator was originally intended to work on a gen or an alt assuming the current rating of the field output is enough. I would suspect the gen field would draw more but I'm not sure.
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