[Farmall] Oliver Cletrac HG Question

[Jim Becker]

The rotating magnet magnetos (like the H-4 and J-4 for example) alternate 
polarity of the spark with each firing.  Two plugs always get a positive 
spark while the other 2 always get a negative.

Jim Becker        jim.becker at verizon.net

----- Original Message ----- 
From: <soffiler at myeastern.com>
To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Sent: Friday, June 17, 2005 8:39 AM
Subject: Re: [Farmall] Oliver Cletrac HG Question



> (2)  You find "distributorless" ignitions on
> modern automobiles that often use one coil to fire two plugs
> simulaneously.  One of the sparks will be "backward" which
> goes against the principles described above.  However it
> works fine simply because modern ignition systems have
> vastly more power than the systems used on old tractors.)
>
> Steve O.