Posted by Jon Hagen on January 25, 2010 at 09:20:01 from (69.26.23.125):
In Reply to: Re: 1 wire alternator posted by Janicholson on January 25, 2010 at 08:07:15:
It depends on the application. A tractor with a charge light needs a 3 wire setup so the charge indicator light functions as intended,no question there. They also excite at lower rpm.
A tractor with mag ignition and no ignition switch is a much cleaner conversion with a "1 wire" alternator. Just a single wire from alternator to ammeter, like the original generator with gen mounted cutout / regulator. No need to clutter the tractor with an oil pressure switch or manual switch to excite the 3 wire alternator. also no manual switch to forget on when you park it and kill the battery.
Like anything else, how well the "1 wire alternator" works, depends on the guy wo did the conversion. Too big a "1 wire" alternator with too large a drive pulley on an old 1200 rpm tractor will not make for a happy user. Size those things correctly and they work quite well, especially now with the new self exciting regulators on the market. They eliminate the diode trio and excite at very low rpm, as low as some 3 wire systems with a small charge light.
Check it out at the site below. down the page part # D102HD1
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