Posted by Tom Fleming on July 14, 2013 at 17:38:54 from (67.20.233.75):
In Reply to: E4A Magneto posted by EM Iowa on July 11, 2013 at 22:10:04:
well, Teddy, you are correct. If you want to get down into the physics behind all this, it has to do with the conservation of mass and energy. Each electron has mass, and thus requires KE (energy) to move it. A weak magnetic field, but fast RPM's will produce a reasonable spark. A strong magnetic field, and low RPMs will produce an equivalent spark. MASS x Velocity = KE.
KE is requires to increase the PD (potential difference) between the 2 poles in a magneto. By passing the copper windings in a magneto through a magnetic field, a PD is represented by induced voltage. Now, this is where the coil comes in. This low voltage (PD) is introduced into the primary windings of the coil. When the rotor turns (and the points open) the field collapses. The result is a step up, or induced voltage on the secondary windings (Which, will be MUCH higher in voltage). Thus, you get your spark. reduce the voltage to the primary (weak magnet, low rpms), and the resultant spark is "weaker". Increase the RPM's, and the KE increases, and the spark is sufficient to run the tractor. Hard as the hubs of heck to start though.
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 - Fabrication (Who Me? Make it myself?) - by Chris Pratt. First of all, what are the reasons for not fabricatin your own parts? Most judgements on what should be purchased rather than fabricated stem from: Originality - If the tractor restoration is to be 100% original, it is likely that you should spend the time and money to locate the component in the used or New-old-stock market. Since this can be extremely difficult, you may want to fabricate the item or purchase a modern replacement temporarily, but eventually, you s
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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.
