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#767817 08/02/2011 1:19 PM
Joined: Sep 2006
Posts: 2,393
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Shop Shark
Shop Shark
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Joined: Sep 2006
Posts: 2,393
I've read alot here about converting to an alternator, but still confused about what year or style(1 wire or 3 wire)I should buy. It's to replace my 12V generator on a 261 in a '50 3100 1/2T with no added options like AC or stereo. Pretty basic, so I'm thinking 60-70 amp style is enough. And I'm using a 3/8" belt, but can go to half inch with proper pulley on the alternator.Any suggestions? Thanks.


Drew
DrewP #767833 08/02/2011 2:26 PM
Joined: Nov 2009
Posts: 239
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'Bolter
'Bolter
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Hi Drew,

Here is some reading I did when I had the same questions. I hope this helps.

Dale
OneVSThreeWire
10SIor12SI


When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
-Unknown-
Joined: Sep 2001
Posts: 29,269
Bubba - Curmudgeon
Bubba - Curmudgeon
Joined: Sep 2001
Posts: 29,269

If you are not going to need a high-powered alternator, and will not need an idiot light, a one-wire alternator has very few significant liabilities. The one-wire JC Whitney alternator that I bought in 1997 is still working flawlessly in a 1954 1/2 pickup truck. It is "excited" at about 800 rpm and once excited it charges at all rpm (from idle upwards).

http://www.jegs.com/p/JEGS/JEGS-1-Wire-GM-Alternators/750748/10002/-1

http://www.classictruckshop.com/one_wire.php

Ignore the misspellings in this diagram. It works fine in our old trucks.
http://www.thecj2apage.com/forums/uploads/53/AmpMeter.jpg

Joined: Sep 2006
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Shop Shark
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Very informative. Answers many of my questions. Saving it all. Thanks to you both.


Drew
DrewP #767950 08/02/2011 9:10 PM
Joined: Jul 2007
Posts: 328
S
'Bolter
'Bolter
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Joined: Jul 2007
Posts: 328
DrewP

1 wire vs. 3 wire is explained well by this
guy at MAD Electrical. He's saved my bacon a couple of time s on
projects I've had and is a wealth of knowledge on properly
wiring and modifying electrical systems. Great tutorials at his site, too.
http://www.madelectrical.com/

mike


Moderated by  Jon G, Rusty Rod 

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