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01-02-2022, 06:22 PM | #21 |
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Re: I think it's time to move to an alternator
I have heard that a variable resistor that can be adjusted from inside the car can replace the 3rd brush system. Can anybody give me more info?
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01-02-2022, 07:57 PM | #22 |
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Re: I think it's time to move to an alternator
Thanks Nkaminar, for the answer to my question above.
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01-02-2022, 07:58 PM | #23 |
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Re: I think it's time to move to an alternator
If the generator can put out 15 amps I wouldn't worry about it. Mine will at least peg my ammeter at 20.
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01-03-2022, 12:13 AM | #24 |
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Re: I think it's time to move to an alternator
I agree that a modern Generator does not look good on the A. I put a power gen alternator on mine. 6 volt, positive ground and it looks like the Model A generator. Anyone familiar with the Model A can tell the difference but I am not showing my car so it makes no difference. I put in Halogen bulbs since I could not see the lights on my A when I had them on at night. The Halogens work as good as modern sealed beams but I was also running negative charge with the set up. I LOVE my power gen. I like the original look and the quick return to center on the Ammeter when after starting the engine.
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01-03-2022, 08:55 AM | #25 |
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Re: I think it's time to move to an alternator
It isn't safe to drive a stock Model "A" in modern traffic.
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01-03-2022, 10:26 AM | #26 | |
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Re: I think it's time to move to an alternator
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Quote:
10 A at high speed indicates FSB 11/29 hasn't been applied, and it includes coil current as well as battery charge current. Battery charge by itself should be no more than 1-2 amps. The ammeter indicates battery charge, not generator output. |
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01-03-2022, 11:03 AM | #27 |
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Re: I think it's time to move to an alternator
A couple of years ago I had the same decision to make. Wanting to keep the old girl as stock as possible I was fortunate that my local club suggested a guy who rebuilds generators and alternators. I took my generator to him and a week later it was ready. Looked like it just came out of a new box. I put it on and did absolutely NOTHING but put it back on the car and hooked up the wires. It worked fabulous and I have real bright lights at night. Glad I went that route. Happy and Healthy New Year to all😊👍.
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01-03-2022, 11:37 AM | #28 |
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Re: I think it's time to move to an alternator
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01-03-2022, 12:30 PM | #29 |
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Re: I think it's time to move to an alternator
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01-03-2022, 05:09 PM | #30 |
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Re: I think it's time to move to an alternator
Bob Bidonde, No it's not if you're puttering along at 40 mph..........
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AL in NY Last edited by AL in NY; 01-07-2022 at 05:27 PM. |
01-03-2022, 05:47 PM | #31 |
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Re: I think it's time to move to an alternator
When I lived in Los Angeles I usually drove my A on the freeways because there were multiple lanes so I didn't hold up any traffic and usually it moved slower than many surface streets. Nobody on the freeway ever rushed a left turn across my path either.
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01-04-2022, 09:20 AM | #32 | |
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Re: I think it's time to move to an alternator
Quote:
What's FSB 11/29? Ford Service Bulletin? What do you mean by hasn't been applied? Thanks Leo |
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01-04-2022, 10:02 AM | #33 |
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Re: I think it's time to move to an alternator
Rebuilding the good ole Model A generator is the way to go if you wish to remain original. Some folks are not aware that Henry sized the generator to deal with battery needs for times the car was built and sold. And there are adjustments that can be made with the 3rd brush. This old gen can crank out a bit more than 10 amps. The trick in adjusting is the average current draw, day and night that varies by how the car is driven. Lots of night driving, up the charge rate. No night driving, lower charge rate. Overcharging is as bad as undercharging. An Alternator will solve all that automatically but......
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01-04-2022, 10:14 AM | #34 | |
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Re: I think it's time to move to an alternator
Quote:
At 6 volts the coil draws about 4 amps. Revving the engine increases voltage, so the coil draws more, and you saw 10A overall. |
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01-04-2022, 11:03 AM | #35 |
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Re: I think it's time to move to an alternator
That's on a non-running engine, a running engine will draw less due the time between when the points are closed and when they are open.
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01-04-2022, 07:31 PM | #36 |
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Re: I think it's time to move to an alternator
Running a 6v generator hope I’m not gonna regret converting to 12v
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01-05-2022, 09:29 AM | #37 | |
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Re: I think it's time to move to an alternator
Quote:
But, KISS. |
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01-05-2022, 09:40 AM | #38 |
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Re: I think it's time to move to an alternator
Only regrets should be trouble and expense of replacing battery, bulbs, cutout, coil, and field windings. To say nothing of dealing with horn and wiper motors. Switch to negative ground while you're at it to be compatible with modern stuff. When done, you've doubled the power output of the generator - not that you need it, although 50 CP headlights are a strain at 6V.
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01-05-2022, 10:16 AM | #39 | |
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Re: I think it's time to move to an alternator
Quote:
The ammeter only reflects which way the current is flowing. It's either flowing from the generator or it's flowing from the battery depending on whether the generator is working or not. Last edited by rotorwrench; 01-05-2022 at 11:11 AM. |
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01-06-2022, 10:34 PM | #40 | |
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Re: I think it's time to move to an alternator
Quote:
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