Posted by John T on January 25, 2010 at 14:15:09 from (71.52.8.83):
In Reply to: Points opening specs?? posted by ryanwheelock on January 25, 2010 at 08:16:06:
Ryan, This is more info then you wanted and many people never heard of it and the readily obtainable specs as listed below will get you in the ballpark and she will run fine. HOWEVER if youre a perfectionist and want to realize the absolute maximum spark energy available from a magneto, adjusting points using whats called the edge gap method is best as the listed specs are often only an approximation of what the points gap SHOULD BE if all is well and correct and theres not yet any wear and tear and slop, in which case that X amount of points gap yields the same as using the edge gap method of adjusting points, BUT NOT NECESSARILY SO AS A MAG BEGINS TO SHOWS ITS AGE.
How it works is there is a precise short distance after which the rotor magnets have exited the laminations WHEN THE COIL CURRENT IS AT ITS ABSOLUTE MAXIMUM and its precisely then the points should break open. What a person does is use a tool or jig to hold the rotor at that precise location then slowlyyyyyyyyyyyy open the points adjustment to stop JUST WHEN THEY BREAK OPEN. Before the points rubbing block is worn down and the bushings arent overly worn that condition is approximated by setting the gap to that typical 0.020 to.022 etc.
A friend of mine recently deceased was a retired Nuclear Physicist who had the time equipment and know how to set his that way and then had equipment to measure the results and he and I always had fun discussing this topic. He used to give a Mag seminar at Gathering of the Green prior to my giving them and I told my people heres the mag specs and what to adjust the points at BUT if youre NERD heres how Duane adjusts them lol then tell them how to use the edge gap method.
Sorry I dont have the FM manual but Bob there has ya covered on that and perhaps it describes how its done on those FM Mags
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 - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[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.
