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10-25-2019, 08:39 AM | #21 |
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Join Date: Apr 2013
Location: Northwest CT
Posts: 1,092
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Re: 6V versus 12V (stupid ques. I'm a newbie)
Agree with those that say keep it 6v at least for now. It's your car and you may find out you need 12v eventually for some reason.
My car is 6v with the stock generator still but I installed an EVR from Tom Wessenberg. Still with all incandescent bulbs and the wiper motor running the generator can just keep up. Probably pushing about 18A at that point. If you do keep the generator I would highly recommend an EVR, it will keep the battery from over charging and you won't have to mess with the 3rd brush. |
10-25-2019, 10:06 AM | #22 |
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Join Date: Dec 2017
Location: Guthrie, OK
Posts: 1,145
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Re: 6V versus 12V (stupid ques. I'm a newbie)
The least painful method is to keep it stock 6V, positive ground. But at least replace the cutout with a FunProjects regulator - it will save worrying over battery charge. Tom Wesenberg's EVR is the more elegant design, but requires minor hacking of the generator innards. The generator can handle all the stock bulbs, but 50 CP headlights are a strain on it, so you may consider an alternator if you plan much night driving. As said before, LED bulbs require a lot less current and don't cost much.
The only reason to convert to 12V is for compatibility with modern add-ons The only stupid question is the one not asked. |
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10-25-2019, 12:26 PM | #23 | ||
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Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 5,849
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Re: 6V versus 12V (stupid ques. I'm a newbie)
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10-25-2019, 12:29 PM | #24 |
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Join Date: May 2010
Location: Alabama
Posts: 8,099
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Re: 6V versus 12V (stupid ques. I'm a newbie)
The main reason that I run my 31 standard roadster on 12 volts is because I wanted too .
As others have said 12 volt bulbs, batteries and other components are readily available . .Twelve volt components used on the model A generally require less amps . Less amps creates less heat . Generators and other components have an easier life and last longer on 12 volt . Lights are brighter and the starter spins much faster . I prefer to keep original appearance where ever possible on my model A's The completely unmodified model A generator charges in amps and will charge a 12 volt battery with no problem . I use the Fun Projects 12 volt positive ground voltage regulator . I always replace old wiring when fixing up my model A's . I use the original 6 volt color coded wiring harnesses from Brattons . Six volt wiring is larger because of the higher amperage and heat produced by a 6 volt system . The larger gauge wire used with 6 volt systems will operate even cooler when used with a 12 volt system . Probably less risk of an electrical fire . Original unmodified starters have worked good for me . I prefer the modern starter drive whether running six or twelve volts . A resistor can be used at the coil connection if you want to use the original type six volt 1.5 OHM coil . I use a three OHM coil on 12 volts and NO ugly resistor will be needed . Though the words FLAME THROWER scares some , I prefer to use the Pertronix 40.000 volt flame thrower coil for better performance that I can feel . This of course is only a matter of personal choice . The Pertronix coil doesn't look any different than most other replacement coils . This 12 volt upgrade retains original appearance with the generator . The battery is hidden under the floor boards as original and remains positive ground The main thing about this conversion is the 12 volt battery itself . If original wiring is good , use it This system operates with 10 amps maximum charge on demand If a lot of high draw accessories will be used an alternator would be your best bet . This type conversion uses less amps for longer componet life , You get brighter lights, faster starts and ease of locating bulbs and batteries . This 12 volt upgrade can also be set up with negative ground . Fun Projects also offered a negative ground voltage regulator that takes the place of the cut out . This setup has worked good for the past 12 years for me . I will upgrade the rest of my model A collectiuon as the 6 volt batteries wear out . |
10-25-2019, 01:39 PM | #25 |
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Join Date: May 2010
Location: on the Littlefield
Posts: 6,159
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Re: 6V versus 12V (stupid ques. I'm a newbie)
I consider the generator more reliable, --- 45 years since it was last rebuilt, the 74 chevy with delco alternator has had it out 3 time for failure in 10 years less time--- I have halogen headlights, keep the charge rate at 14 amps, have a spare or 2 of bulbs that I haven't used, drive a lot at night and have been accused of hiding 12volts because it cranks fast---- belts last longer with the generator--- my spare is over 30 years old and never been used----
Proper restoration eliminates the need for most modifications |
10-25-2019, 02:52 PM | #26 |
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Join Date: May 2010
Location: Alabama
Posts: 8,099
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Re: 6V versus 12V (stupid ques. I'm a newbie)
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These 35W 12 volt bulbs are brighter than original style 50 candle power bulbs . I really can't understand why , but these bulbs don't dim at idle like other bulbs that I have used . My JC whitney 6 volt ahooga horn blows strong on 12 volts and can be heard for a long distance . |
10-25-2019, 03:03 PM | #27 |
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Join Date: May 2010
Location: Alabama
Posts: 8,099
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Re: 6V versus 12V (stupid ques. I'm a newbie)
I also prefer the generator !!!
I rebuild my own generators . If an alternator goes out it would just be a throw away for me . I know nothing about alternators other than they can put out lots more amps . If more amps are needed , the alternator is the easiest and best bet . |
10-25-2019, 03:57 PM | #28 |
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Location: Sacramento
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Re: 6V versus 12V (stupid ques. I'm a newbie)
Proper restoration cant make a generator put out smooth consistent voltage,its just like a properly restored stock engine doing 65 mph..yeah,it will for awhile till the center main fails,the generator will work but your components will ultimately pay the price,there is a reason generators disappeared 60 years ago
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10-25-2019, 09:20 PM | #29 | |
Senior Member
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Re: 6V versus 12V (stupid ques. I'm a newbie)
Quote:
Very true!
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10-26-2019, 06:59 AM | #30 | |
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Join Date: May 2010
Location: on the Littlefield
Posts: 6,159
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Re: 6V versus 12V (stupid ques. I'm a newbie)
Quote:
What "components " will pay the price "?, I did have to replace the battery after 16 years, the halogen bulbs have 25 years on them and I drive a lot at night. The wiring harness?--- its probably original, I did have the brass tube on the idle jet crack---perhaps that is from going ove 50 on rough dirt roads Last edited by Kurt in NJ; 10-26-2019 at 07:07 AM. |
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10-26-2019, 09:08 PM | #31 |
Senior Member
Join Date: May 2010
Location: Alabama
Posts: 8,099
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Re: 6V versus 12V (stupid ques. I'm a newbie)
I haven't had a problem with any of the generators that I have cleaned up and repaired in over 20 years.
My model A's are not used for primary transportation . I've got too many to drive every day . Some have to sit for a while . Still no component problems either six or twelve volt . knock on wood !!! |
10-26-2019, 11:27 PM | #32 |
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Join Date: Sep 2016
Location: Southwest Michigan
Posts: 113
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Re: 6V versus 12V (stupid ques. I'm a newbie)
I run a 6v system with a large pulley alternator because i drive my car to work instead of a small pulley for parades. All my lights have been upgraded to LED to allow me to see and to be seen by others. I also have LED turn signals and an LED third light in the back window.
.....There are no problems keeping your car 6v....the problem is the other drivers on the road don't know how to deal with any car that does not function like a modern car. |
10-27-2019, 07:58 AM | #33 | |
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Join Date: Apr 2017
Location: Sacramento
Posts: 1,262
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Re: 6V versus 12V (stupid ques. I'm a newbie)
Quote:
Yep you have the greatest car ever built,your posts tell the story..and you never fail to toss in your superior skills.. |
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