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6 Volt Alternator Conversion

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Richard Fazio

01-14-2003 17:33:19




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I was wondering if anyone has tried one of these 6 volt alternators on an N. They have a mounting kit for 9Ns and 2Ns. They also have a low cut in speed unit, that they recommend for tractors. The alternator is a one wire self exciting type. It sounds like it would work perfectly. I'm so tired of my generator not working correctly. It would be nice to bolt this unit on and forget the problems with no 12 volt conversion.

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Dave OH

01-15-2003 23:32:52




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 Re: 6 Volt Alternator Conversion in reply to Richard Fazio, 01-14-2003 17:33:19  
You don't say what your problems with you generator have been. Maybe there is a simple answer.
Dave OH



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Phil (NJ-AZ-SK)

01-15-2003 00:32:45




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 Re: 6 Volt Alternator Conversion in reply to Richard Fazio, 01-14-2003 17:33:19  
Richard, >>>I'm so tired of my generator not working correctly.>>>

If your problem is that the gen is lossing polarization a simple modification will correct this and insure the gen is polarized each time you start the tractor. Install a 6 volt marker lamp in series with a diode between the ignition switch and the armature. Diode cathode towards ignition switch for +ve Ground

Just a thought,

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Jim Cox (SW Missouri)

01-14-2003 19:24:50




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 Re: 6 Volt Alternator Conversion in reply to Richard Fazio, 01-14-2003 17:33:19  
TYPICALLY, speaking, you can either have a one wire alternator, or a low cut-in (turn on RPM) alternator. You have to rev the engine to start most one wire alternators up, as they aren't allowed ignition power to turn on the regulator, only power generated internally by residual magnetism in the rotor. If you assume a 2:1 ratio from crank to alt pulley, the rpm may or may not make a difference to you. Some bosch alternators turn on at 700 RPM (350 engine rpm) and some delco's don't bother till 1800 rmp (900 engine rpm) this is fine for most tractors as long as they've been revved up at first. I have a working one wire delco on my 9N, but i'll upgrade (?) to a ford alternator one of these days, complete with vreg, just to keep a little more of Henry's blood in it. I built a 12V 8N generator in my shop today, haven't tested it yet. looks like six, should put out twelve. Good luck
Jim Cox

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RoN of ohio

01-15-2003 10:37:01




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 Re: Re: 6 Volt Alternator Conversion in reply to Jim Cox (SW Missouri), 01-14-2003 19:24:50  
Jim, keep us posted on that 12 volt generator. Some autos in the fiftys and early sixtys used a 12 volt generator, and if I ever try to restore my 'N', I would like to 'rebuild' my old 'unworking' 6v gen to 12v and to keep the 12 volt system that I now have. In other words, have it looking like a 6v. Someone who had my 'N' earlier when rebuilding the gen. had replaced the 6v arm. with a 12v arm. and I'm not sure what is the difference, but it did put out 6 volts. I just presumed that the 12 volt arm. had twice as many windings.

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Jim Cox (SW Missouri)

01-15-2003 11:08:18




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 Re: Re: Re: 6 Volt Alternator Conversion in reply to RoN of ohio, 01-15-2003 10:37:01  
actually, the 6V and 12V have the same copper, one is lap wound, one is wave wound. Analageously speaking (?) think about the wrong way to tighted lugs on a wheel, 1-2-3-4-5, that's how a lap wound is done, better for lower voltages, and how you wind a 6V armature. Wave wound is 1-3-5-2-4, better for 12V (more windings in series for adding induced voltages) but works great 6 or 12. The 6V field and vreg make it OK. That part I still DON'T understand, but doggone it it works on my test stand every time, even when I know it shouldn't. Guess i'll start calling that experience. putting the 12V guts inside the big 6 is not a big deal, but getting the field winding location and wiring is the hard part. other wise you'll have a 12V positive ground! Have a good day everybody
Jim Cox

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Don, Luling LA

01-14-2003 18:22:06




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 Re: 6 Volt Alternator Conversion in reply to Richard Fazio, 01-14-2003 17:33:19  
Unless the 6 volt altenator looks like the orginal generator to keep the tractor looking authenic I wouldn't go to a 6 volt altenator system. Just assume go with the cheaper more readily available 12 volt altenator and system. Just my opinion though,
Don



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Richard Fazio

01-14-2003 17:35:15




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 Re: 6 Volt Alternator Conversion in reply to Richard Fazio, 01-14-2003 17:33:19  
Here is the link!

Link



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Tim 2N-NY

01-14-2003 18:36:40




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 Re: Re: 6 Volt Alternator Conversion in reply to Richard Fazio, 01-14-2003 17:35:15  
That looks interesting to me. Wonder what Dell's opinion is?????



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unm . . . Dell (WA)

01-14-2003 22:16:31




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 Re: Re: Re: 6 Volt Alternator Conversion in reply to Tim 2N-NY, 01-14-2003 18:36:40  
Guys..... ...I'ma 12 volt advocate for the right reasons. I can NOT see a reason for 6 volt alternator, ever. If'n yer gonna alternate, go for the gusto, maker 12 volts.

I went and looked at his web site. He's figgered out how to make a slow turning 1-wire 12 volt alternator work. Its in the gutts. This would be great for our slow turning N-Tractors. Most 1-wire alternators are designed for high rpm automobile/marine applications, NOT good for N's. Which is why I'm a 3-wire Delco 10-SI advocate, 'cuz it starts charging at low rpms.

I also agree with his position about battery polarity, maker 12 volt negative ground.

Problem is, I can go to the local used parts emporium and get a checked out, 3-wire 12 volt Delco 10-SI alternator outta barrel for $15. Your call..... ...Dell

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