[AJD] Magneto?

[Dean Moore]

Spark is same at hand turn as in full rpm. The mag makes no different implus power

Sent from my iPhone

On Jun 11, 2012, at 2:15 PM, Mike Scholl <buck69_hunter at hotmail.com> wrote:

> Tyler,
> 
> I've always used a spare spark plug with the base grounded to test for
> spark.  If it sparks, the motor should start provided there is good
> air/gasoline mixture and that the spark is timed.
> 
> A number of things can go wrong besides the mag coil... the impulse is also
> critical.  At very low revolution speeds (like when starting), the impulse
> provides for more internal magneto speed which generates a hotter spark.
> 
> Since there are a number of different mag options, which are we talking
> about Wico C or X, or Fairbanks-Morse?
> 
> Mike  
> 
> -----Original Message-----
> From: antique-johndeere-bounces at lists.antique-tractor.com
> [mailto:antique-johndeere-bounces at lists.antique-tractor.com] On Behalf Of
> Lyle Kause
> Sent: Monday, June 11, 2012 1:27 PM
> To: 'Antique John Deere mailing list'
> Subject: Re: [AJD] Magneto?
> 
> Tyler, My father (deceased now) was able to physically hang onto a spark
> plug, or mag and tell me if it was a good spark or not. Needless to say most
> people cannot hang on to, or would even want to check for spark this way. He
> did say though, if you take a dry green blade of grass and slowly slide it
> up on top of the spark plug until you start to feel pulses; The farther away
> you are from feeling pulses, the stronger your mag is. Sounds pretty crude
> but is surprisingly accurate.  Lyle
> 
> -----Original Message-----
> From: antique-johndeere-bounces at lists.antique-tractor.com
> [mailto:antique-johndeere-bounces at lists.antique-tractor.com] On Behalf Of
> Tyler Juranek
> Sent: Monday, June 11, 2012 10:30 AM
> To: antique-johndeere at lists.antique-tractor.com; Antique tractor email
> discussion group
> Subject: [AJD] Magneto?
> 
> Hi everybody,
> On any 2 cylinder John Deere that is a hand start, what is the best way to
> test the magnetic field in the magneto?
> If it makes more sense, I'm just wondering how to test the mag to find out
> how much spark it has.
> Any help will be most appreciated!
> Thank you,
> Tyler
> 
> --
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