Posted by Janicholson on April 25, 2020 at 07:15:21 from (24.240.46.228):
In Reply to: confused over coils posted by Charlie M on April 25, 2020 at 06:32:57:
Many car companies determined that the starting process in cold weather (Detroit) was a problem. The starter could draw enough current that the system voltage might drop to 4.5 volts. The coil was only given that amount, causing weak spark. The solution was to use a coil that was designed for 3.5 volts or so giving the starting process a good chance. This starting voltage was delivered to the coil from a connection direct to the starting circuit. this is only supplied when the starter is turning the engine. (several methods are used to do this "bypass" circuit) When cranking results in a start, the bypass voltage is shut off. The ignition circuit through the switch has been on all this time, but it runs through a resistor dropping its voltage to the 4.5 or so volts for the coil. Remember that the running voltage of the system is a bit over 7 volts, charging the battery. This keeps the coil happy, and allows cold starts to be much more successful. Jim
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - A Farmall Story - by Ed Meadors. The year was 1978. Our young family had recently moved to rural Chesapeake, Virginia to a plot of land which would finally allow us to realize our dreams of a huge garden, critters and more lawn and pasture than we would ever use! We needed a TRACTOR; not a riding mower or tractor wannabe, but a real TRACTOR. The answer to our needs materialized in the form of a '44 Farmall A, complete with cultivators, discs, single plow, a 5ft.Woods belly mower and one, mounted spare 9.00x24 rear wheel.
... [Read Article]
Latest Ad:
one 8n and one 9n tractor. totaly restored,pretty much everything is new. one 6ft blade good shape.
[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.
