If a tractor is wired Pos ground, the coils - receives ign switch voltage while its + wires to ground via distributor terminal and eventually the closed points. IE The coil polarity has to match battery polarity for most efficient ignition....
HOWEVER if its Neg ground, the coils + receives ign switch voltage while its - wires to ground via distributor terminal and eventaully the closed points.
THE REASON FOR ALL THAT IS SO THE PLUG ELECTRONS FLOW FROM THE HOTTER TIP TO THE COOLER GROUND STRAP but if the coil is swapped from the above, electron flow is the wrong way, cool strap to hotter tip.
I see no "EXTRA VOLTAGE" The coil only rises and ramps up high enough so current arc jumps the plug gap BUT NO HIGHER. Its just that if the polarity is correct allowing electron flow from hot tip to cold groudn strap THE VOLTAGE DONT HAVE TO RISE AS HIGH BEFORE THE ARC OCCURS and thats more efficient,,,,,,less work for the coil,,,,,,less wasted heat losses
I guess I may not understand what their argument is all about with talk of "extra voltage" given the physics as I understand it as described above. Bottom line, if the coil polarity correctly matches battery polarity (see my first 2 paragraphs for whats correct) its more efficnet and firing voltage is a few thousand less volts since its much easier to arc the gap if the electrons are flowing the right direction (which correct wiring described above accomplishes)
Thanks again, fun chat, the post above spoke of no way firing voltages were different, I was ONLY trying to educate and explain the engineering and physics of how n why voltages ARE DIFFERENT IF POLARITY CHANGES. Im trying to help NOTTTTT fight
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Product Review: Black Tire Paint - by Staff. I have been fortunate in that two of my tractors have had rear tires that were in great shape when I bought the tractor. My model "H" even had the old style fronts with plenty of tread. My "L" fronts were mismatched Sears Guardsman snow tires, which I promptly tossed. Well, although these tires were in good shape as far as tread was concerned, they looked real sad. All were flat, but new tubes fixed that. In addition to years and years of scuffing and fading, they had paint splattered on
... [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]
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.
