[AT] Coating for small engine mag

[charlie hill]

Guys I'm not sure I understand this discussion.  Paint, lacquer, etc. 
are very much insulators.  When we apply industrial coatings to steel
structures we are often required to do a spark test on them.  It involves
a wet sponge on the end of a rod charged with a fairly high voltage.
If it sparks then we know there is a tiny pin hole in the paint film that
will cause corrosion in the future and it has to be fixed.  

I think if I wanted to protect a flywheel and magnets from rusting I'd 
maybe put a thin film of dielectric grease on them.

Charlie

-----Original Message----- 
From: John Hall 
Sent: Thursday, December 07, 2017 9:24 PM 
To: Antique tractor email discussion group 
Subject: Re: [AT] Coating for small engine mag 

I've can't ever recall encountering a flywheel magnet or a magnet inside 
a magneto that was coated---must be a reason.

John Hall


On 12/7/2017 1:25 PM, Mike M wrote:
> My wood splitter wouldn't start the other day, had plenty of gas, wet
> plug, but weak spark. I suspected rust on the flywheel, so I tore it
> apart and I was right. Cleaned it up, and now have a nice strong spark.
> Question is, can I coat the mag and coil pickups with anything to
> prevent the rust from re-occurring?
>
> Thanks,
> Mike M
>
>
> -

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