[AT] Coating for small engine mag

[Mike M]

That's true Steve, it's a 5 year old Briggs single cylinder.  Think I 
just hit it with a light coat of paint or lacquer, as i have that 
handy.  Your are right about the tolerances, the air gap on this engine 
is .006.
Mike M


On 12/7/2017 7:00 PM, Steve Offiler wrote:
> 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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