[AT] JD Distributor vs. Magneto

[deanvp at att.net]

Our Show is over so I can now get back to this. All JD Two Cylinder tractors with batteries left the factory with a positive ground system. Whether the tractor is still configured that way is a crap shoot. I haven’t looked at Pertronix systems for years so I am completely out of date. Early on they did not produce Positive ground systems for the JD tractors. In those days in order to use their Electronic ignition systems the tractor had to be converted to a negative ground system.  If they are producing positive ground systems now that is good news. But …. Using their web site to find an applicable system for a JD Model A is an extreme exercise in futility.  I would suggest contacting the owner of https://brillman.com/ to get an  up to date picture of what might be available from Pertronix for your particular Electronic Ignition requirement.

 

However, a properly repaired Magneto or Distributor will work just fine on your JD A.  For Magneto parts and real kneadable information I like working with http://www.magnetoparts.com/index.html  Bill is an Electrical Engineer that does his Magneto stuff as a side business. Evenings and weekends.  

 

Dean VP

Apache Junction, AZ

 

From: AT <at-bounces at lists.antique-tractor.com> On Behalf Of Jason
Sent: Wednesday, March 11, 2020 7:29 AM
To: Antique Tractor Email Discussion Group <at at lists.antique-tractor.com>
Subject: Re: [AT] JD Distributor vs. Magneto

 

Yes they make a pertronix for Deere A with a Delco just need to know if 6V or 12 and pos or neg ground.

 

Honestly probably not needed unless the rotor shaft is wobbly. A good tune up usually gets it done. Clean the point surfaces with alcohol and polish with paper. 

 

Jason

All States Ag Parts

855-530-3384

quiet list member since 1995

 

On Wed, Mar 11, 2020, 12:38 AM STEVE ALLEN <steveallen855 at centurytel.net <mailto:steveallen855 at centurytel.net> > wrote:

Thanks for the info, guys.

Best I can tell from the pic, it's the Delco unit--it has the round cap and doesn't look like the mags on my other tractors.

I followed the Petronics link, but the site doesn't admit to having a set for the application.  I hadn't considered changing it, but I would consider it if a unit were available.  I can keep the original guts for shows or whatever, if necessary.  Not planning to show it:  I need to use it.

The "original" Steve Allen
_______________________________________________
AT mailing list
AT at lists.antique-tractor.com
http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.antique-tractor.com/pipermail/at-antique-tractor.com/attachments/20200316/a737b926/attachment.htm>