I had magneto trouble at the KCR shoot this past Friday. Backed up in my stall early afternoon and a few minutes later, it would not start for any reason. After pulling a spark plug and seeing there was no spark, I had to take the ride of shame back to the trailer.
Thats Gunslinger hauling me back to the barn.
When I got home I removed the mag and found the points looked good but the coil , not so much.
The tester.
Past experience has taught me that cracks radiating out from the core lamination are never a good thing and I was right. A quick test with the Mercotronic 98 showed way too much juice required to make it spark. In fact, I had to turn the voltage all the way up and even then the fire in the test window was sporatic. Muleman has the only other one of these testers I have seen here but it sure is a dandy way to verify a faulty ignition system. The book for the 98 has specs for this very same ignition coil and I guarantee if it fails one of the tests, it's gonna cause trouble. John Emery had brand new ones for sale quite a bit cheaper than ebay so new parts are on the way. I'll post the whole mag rebuild after the new coil gets here.
GF
Magneto Trouble
M274 Mechanical Mule Wanted, For Sale (NO AUCTION or EBAY), and Knowledge Base
- Grummanflyer
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Magneto Trouble
Post by Grummanflyer » Mon Apr 16, 2018 6:49 pm
I have guns.
You don't want me to have guns.
I won't give you my guns.
YOUR MOVE!
You don't want me to have guns.
I won't give you my guns.
YOUR MOVE!
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