[AT] Coating for small engine mag

[Steve Offiler]

This is just a fairly modern small gas engine, I’m assuming.  There’s a permanent magnet on the flywheel that spins past a coil, inducing a current in the coil.  The paint doesn’t touch anything carrying electrical current.   

Sent from my iPhone

> On Dec 7, 2017, at 6:42 PM, magreer67 <magreer67 at gmail.com> wrote:
> 
> Would the paint act as insulation and interfere with the electrical current? 
> 
> 
> Sent from my Verizon, Samsung Galaxy smartphone
> -------- Original message --------From: Stephen Offiler <soffiler at gmail.com> Date: 12/7/17  5:58 PM  (GMT-05:00) To: Antique tractor email discussion group <at at lists.antique-tractor.com> Subject: Re: [AT] Coating for small engine mag 
> As long as the paint contains nothing ferrous (iron, iron oxide, etc...
> certain reddish pigments could be a problem) it looks just like air to the
> magnetism that is creating the spark.  Of course you can't lay it on
> thick.  The air gap tends to be pretty small, which is critical for the
> performance of the magnetic "circuit".
> 
> But, why not paint it at the factory?  That's an interesting question.
> 
> SO
> 
> 
>> On Thu, Dec 7, 2017 at 5:21 PM, Mike M <meulenms at gmx.com> wrote:
>> 
>> That is obvious, but I doubt it was painted from the factory or it
>> wouldn't be rusted now. Wasn't sure if paint would interfere with the
>> spark.
>> 
>> Mike m
>> 
>>> On 12/7/2017 3:37 PM, Stephen Offiler wrote:
>>> Hate to sound obvious, but, how about paint?
>>> 
>>> SO
>>> 
>>>> On Thu, Dec 7, 2017 at 1:25 PM, Mike M <meulenms at gmx.com> 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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