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dean.psiropoulos(at)veriz
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 Posted: Sun Jul 23, 2006 9:49 pm Post subject: Magneto P leads |
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I'm wondering about connecting the P leads at the magneto. Looking at the
top of the (Slick) magneto, I removed the nut and star washer and found an
insulating fiber washer underneath. Looking under the washer, there is the
threaded stud which projects from a piece of white plastic that is in turn
surrounded by a shiny piece of metal that looks like a large nut. My
question has to do with grounding the P lead out on the magneto which is
recommended for lowest system noise. I assume that the fiber washer is
there to keep the P lead terminal from grounding the threaded stud to the
"shiny metal nut" that surrounds the plastic that the stud projects out of.
If so, can I use two ring terminals on the coax, one with a much larger ring
placed under the fiber washer which will serve as the return grounding path
and then place a smaller ring terminal (connected to the other wire in the
coax) on top of the fiber washer (which is on top of the larger ring
terminal contacting the shiny metal nut) under the nut that goes on the stud
and not have to worry about magneto grounding somewhere else on the engine?
I'm just trying to not have to strip a whole bunch of shield off the P lead
for grounding at a separate location and this looks like it should work but
I know nothing about magnetos so I'm not sure if my hypothesis is correct.
I hope you can decipher what I trying to say. Thanks.
Dean Psiropoulos
RV-6A N197DM
Stringing wire (still)
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Mon Jul 24, 2006 4:30 am Post subject: Magneto P leads |
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The centre wire of your P Lead should go to your Ignition switch. The nut
you are talking about holds the P-Lead in place and prevents the P-Lead from
grounding at the mag end.
When the P-Lead is grounded there is no spark to fire the plugs. In order
for the engine to work the P-Lead must "float" with no grounds any where in
it.
Noel
[quote] --
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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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