Forum: Model A (1928-31)
11-18-2014, 04:59 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
Darryl, you are correct.
With near 15,000 views and the number of electrical problems that are mentioned, I think someone needs to write a book and make a video of troubleshooting the Model A...
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Forum: Model A (1928-31)
11-16-2014, 10:31 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
You need a cutout or regulator the same voltage as the battery.
The 6 volt generator can charge a 12 volt battery, and a 12 volt generator regulated down to 7.2 volts can charge a 6 volt battery.
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Forum: Model A (1928-31)
05-31-2014, 01:13 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
Holy cow, this must be the longest thread on Fordbarn about a problem and it seems there never was closure.
To do a quick recap the generator was putting out high voltage until it was bench...
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Forum: Model A (1928-31)
10-02-2012, 07:49 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
The later Model B generator had 2 wires coming through a rubber grommet, rather than a brass terminal. One is the field ground wire and it is grounded under one of the cutout mounting screws. The...
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Forum: Model A (1928-31)
10-02-2012, 01:22 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
No, No, No, alternators just look so wrong on any antique car. :eek:
I'm not sure at what page the generator was found to be the problem, but I thought it showed output until the shop guy looked...
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Forum: Model A (1928-31)
10-02-2012, 11:06 AM
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Replies: 171
Views: 52,689
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Forum: Model A (1928-31)
10-01-2012, 06:11 PM
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Replies: 171
Views: 52,689
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Forum: Model A (1928-31)
10-01-2012, 03:00 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
You should show some voltage at the generator output post anytime the generator is turning over, and when the voltage reaches 6 or more the cutout contacts should close, so the generator output will...
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Forum: Model A (1928-31)
10-01-2012, 05:29 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
First DON'T use a digital meter for your tests. ONLY use a good analog meter.
As mentioned the stock cutout, or diode cutout is a simple OFF-ON switch (relay) that closes the contacts when about 6...
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Forum: Model A (1928-31)
09-28-2012, 11:46 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
Not a thing.:)
Many years ago when my 1952 Studebaker battery started to fail, I used some of that magic blue liquid and it brought life back into the battery, until the battery was stolen a...
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Forum: Model A (1928-31)
09-28-2012, 10:54 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
My 6 volt car batteries have also lasted longer than the 12 volt batteries. When I bought the junk yard battery 8 years ago for $2, there were 3 identical 6 volt batteries that looked very clean, so...
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Forum: Model A (1928-31)
09-28-2012, 06:23 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
This is a good example of where being there would sure help to diagnose the problem. Are the terminals soldered to the wires? Are all connections clean and tight? Is the wire of proper guage?
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Forum: Model A (1928-31)
09-27-2012, 07:23 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
OK, I've never had a 6 volt battery go bad in 3 years and since it tested good, I'd say it's OK. My Sperry SP-152A analog multimeter has a 20 amp scale, so it would be ideal to check the accuracy of...
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Forum: Model A (1928-31)
09-27-2012, 03:44 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
How old is the battery? As P.S. said a new battery should read higher, probably closer to 6.4 to 6.7 volts. I'm still using the $2 battery I bought from a junk yard 8 years ago and it also reads 6.2...
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Forum: Model A (1928-31)
09-26-2012, 09:49 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
No, the ammeter is out of the circuit as described here.
Also, if the fuse blows for the generator, then it is no longer connected to the battery and will be putting out high voltage internally and...
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Forum: Model A (1928-31)
09-26-2012, 06:58 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
The third brush only sets the amps and has no control over the voltage coming out of the generator. Therefore a poor connection in the charging circuit allows the generator voltage to rise to...
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Forum: Model A (1928-31)
09-26-2012, 06:16 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
Bad connections sure will trigger HIGH voltage. The Model A generator is unregulated and can put out up to 40 volts if it doesn't have a good connection to the 6 volt battery. This is why at least 3...
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Forum: Model A (1928-31)
09-25-2012, 09:05 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
8.8 volts at the starter with a high idle and 4 amps showing on the meter, but only 6.2 volts at the battery. I can't see loosing 2.6 volts through battery cables. :confused:
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Forum: Model A (1928-31)
09-25-2012, 03:56 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
The + side of the coil goes to the points and is the ground side. If the points are open, then the + side of the coil should read the same as the - side, with the key off or on, and engine stopped....
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Forum: Model A (1928-31)
09-09-2012, 09:27 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
If the generator is charging the battery at a high enough rate to bring the post voltage from 6.2 to 8.0 then the amp guage should be showing a fairly high charge rate. Make sure the new terminal box...
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Forum: Model A (1928-31)
09-09-2012, 04:40 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
What replacement parts were ordered?
What is the setting on the generator adjustable brush?
You shouldn't be reading 9.5 volts and I'm wondering if the generator charge rate is just set too...
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Forum: Model A (1928-31)
09-07-2012, 05:13 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
Replace the bushing ASAP or you may have to replace some much more expensive parts. A worn bearing or bushing can allow the armature to rub on the pole shoes and that's what can kill the armature...
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Forum: Model A (1928-31)
09-07-2012, 10:08 AM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
Sometimes the brushes can make a light sqeal, but a bad bearing should be noticable louder. I'd slip the fan belt off and spin the pulley with your hand to check for any play or rough bearings. While...
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Forum: Model A (1928-31)
09-06-2012, 09:32 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
Please give the continuity tester to your dog, so he can bury it in the back yard. :D:p
You are only concerned with checking voltage by using your volt meter.:)
#2. you shorted the battery...
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Forum: Model A (1928-31)
09-05-2012, 08:39 PM
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Replies: 171
Views: 52,689
Re: Is There An Electrician In The House?
One more thing........how old is the battery? and what condition is it in?
A weak battery or one that's too small will also allow the generator to put out too many volts, even with good...
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