George, I've long since lost track of what it is you're trying to accomplish.
Mark, you mean I have to have a reason for doing things? lol
My son wants to learn everything about my Jubilee. I bought the Jubilee with a rebuilt engine. It is a good tractor and will last him a lifetime.
It was converted to 12v before I bought it. The wiring was a mess, so I got rid of the old wiring and made my own wiring harness. I used the old ballast and the 6v coil.
My goal is to find exact replacement ballasts and 6v coil, which isn't as easy as you would think. A 1.5 ohm ballast was .9 ohms and the current was 6 amps. No wonder points don't last if you don't have a way to verify what you are buying.
Using my test setup, I'll easily find a replacement coil and ballast. I may even try to use a larger ballast and reduce the primary current. My test setup is very simple. Two resistors the same size, same ohms, in series is a voltage divider. If I put two 6v coils in series, each will have the same voltage. If I put 2 ballast resistors the same size in series I will have a voltage divider. Each will have the same voltage. It's that simple. I don't need precision voltmeters or ammeters.
Many YT members have no idea that ohmmeters are crap. Some couldn't tell me my 1.5 ohm resistor was .9 ohms.
Do you have an ohmmeter that can accurately measure 1.5 and .9 ohms?
Mark, I'm a full time retired physics, math, and electronic teacher. One has to have a little fun playing with simple series circuits. What do you do for fun in Florida?
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 - Gatherin of the Orange - by Rick Nikolich. In July of 1998 I was talking to fellow Allis Chalmers collector Mike Schilling about the annual "Gathering of The Orange" AC show coming up in August of 1999. He got this wild idea that we should get a convoy of AC tractors and drive them from Charlotte, Michigan 105 miles to LaGrange, Indiana.
... [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.
