[AT] Strange Magneto event today.

[Phil Auten]

I think you have already figured this one out, Dean. Like Farmer says, 
"Check the grounds". :o)

Phil in TX


On 5/21/2020 7:11 AM, Mark Johnson wrote:
>
> Is there anything in or around the shop that could have abruptly 
> demagnetized the magnets...some of the older 'permanent magnet' metal 
> recipes weren't all that permanent, although I never heard of one 
> getting de-magged so abruptly!
>
> Mark J
>
> On 5/21/2020 12:55 AM, Dean VP wrote:
>> Was helping a friend today testing out some carburetors and Magneto's 
>> on his 1936 JD B. A very strange thing occurred. I was in charge of 
>> clean ing Magneto's up and getting them to the point that they would 
>> deliver spark manually on the bench. Then we would install them on a 
>> tractor and get the tractor running. I went though one Magenta pretty 
>> thoroughly and was getting really good spark out of both ports on the 
>> bench. Install it on the tractor absolutely no spark.   Could hear a 
>> really good impulse. We tried tightening it up tighter and also 
>> loosening it up. No change ...no spark.  Blew me away I was getting 
>> really GOOD SPARK MANUALLY NOT MORE THAN A FEW MINUTES BEFORE. W hat 
>> in the sawmill would cause something like that.  The only thing we 
>> didn't check was to see if the Magneto was getting grounded properly 
>> to the governor.  That is the only thing I can think of right now. 
>> What other reasons would cause this strange event???  Really weird.
>>
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>
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