Tractor Talk Discussion Board |
Re: Re: Re: Re: Re: low mod 12v conversion
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by buickanddeere on February 25, 2004 at 12:07:55 from (216.183.136.3):
In Reply to: Re: Re: Re: Re: low mod 12v conversion posted by Bob on February 25, 2004 at 09:09:26:
Not a simple situation and we are working from here say evidence indirectly from the non electrically trained person who needs something to blame other than his own handiwork. The main winding heating will be unaffected at the current has not changed nor has the resistance of the main windings. The same I2R heating will occur no matter if the output is 6,12 or 24V. As for the field winding heating that involves several factors. The situation was an old generator that was how close to smoking anyways? How full of dirt and dust was it? And it wasn't speeded up as I suggested. This electrical system wasn't working properly when on 6V either. It's possible the field windings were shorting then and not developing enough magnetic flux to excite for 6V operation either. Voltage output is directly proportional to rpms. The field contacts were likely closed 100% duty cycle which they are not designed to operate even on 6V. More rpm would have prevented that. It's possible the "new" regulation was not properly adjusted by the home tinker who didn't use a voltmeter. It's possible the contacts became welded closed due to being under rated with the 2x field current at 12V. Or the spring was too tight and they couldn't open. Heating of the field windings was increased by a factor of 4 when the regulator was calling for more voltage. Had the installation been engineered, new condition matched components and some rpm. It would still be in service. Reminds me of the stories how some people blame young Billy Bob for blowing up Grandpa's tractor/truck/ etc engine that had sat in the shed for 30 years.Nobody seems to remember it was parked because it was on it's last legs or had quit.
Follow Ups:
Home
| Forums
Today's Featured Article -
Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[More Ads]
Copyright © 1997-2024 Yesterday's Tractor Co. All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V. Yesterday's Tractors - Antique Tractor HeadquartersWebsite Accessibility Policy |
|