Calling coil experts….!
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- This topic has 7 replies, 5 voices, and was last updated 2 years, 2 months ago by crosbyman.
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December 24, 2021 at 12:51 pm #251682
with the apparent failure of some Chinese coils what could be wrong with the coils ??? they seem to test good ohm wise (static test) but fail under load
less tolerant yet blamed for weaken flywheel magnets ?
less senstive metallurgy of the laminates (cheap steel less conductive to magnetism ? )
cheap-corrupted copper alloy in the windings causing less current flow when the magnetized cores collapse when points open up ?
Mr. Mohat ???
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- This topic was modified 2 years, 3 months ago by crosbyman.
December 24, 2021 at 5:47 pm #251705Could be any of the above mentioned or likely a combination, and additionally poor varnish insulation on the windings.
Joe B
December 25, 2021 at 12:04 pm #251736I was under the impression that the coils were good but the laminates were lacking? I have removed the laminates from some old, cracked coils with plans to use them with the chinese coils once I run out of the good German ones. Altgough I have not yet bought any chinese coils, I assume eventually they will be our only option
ScottDecember 25, 2021 at 12:48 pm #251741this week I chucked and older but not cracked one … the HV pin was flopping from infinity to 7 kohms .. as I probed the pin….
so far that is probably the worst I have seen on non-cracked coils.
can’t say I had much bad luck with them
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December 25, 2021 at 5:44 pm #251750opposedtwin -I believe the Sierra coils are the ones with bad heels
December 30, 2021 at 2:55 pm #251974I am needing a prop shaft seal for a 1957 Elgin 7.5 HP. It is 3/4 inch OD and 1/2 inch ID. About 1/4 inch thick. It looks like multiple manufacturers used the same seal around that time.
It is held in place by a 1 inch pressed in washer./Users/braddupre/Desktop/IMG_1347 2.jpegIMG_
See photo below.- This reply was modified 2 years, 2 months ago by duprebrad.
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