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4hv.org :: Forums :: High Voltage
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Ignition coil insulation?

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lpfthings
Sat Feb 07 2009, 06:02AM Print
lpfthings Registered Member #1361 Joined: Thu Feb 28 2008, 10:57AM
Location: Cairns, Australia
Posts: 305
Ive been mucking about with the frequency of my dual ignition coil setup, and it's producing ~9cm sparks!

This is one of the oil filled types with the long neck, but because of the really high voltage, it arcs over that neck quite easily. Anyone know a way to stop it from arcing over, but still have it so I can remove the wires etc?

Thanks
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aonomus
Sat Feb 07 2009, 06:12AM
aonomus Registered Member #1497 Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
TDU's website, he used PVC aquarium tubing to some success...

Link2
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Berni
Sun Feb 08 2009, 09:26AM
Berni Registered Member #1132 Joined: Mon Nov 19 2007, 06:15PM
Location: Slovenia
Posts: 84
I did a similar thing, just put a hose over it and lots of varnish. It worked great but then it acred over internally and bye bye coil.

That neck arcover thing with ignition coils is actually a nice safety feature to protect the coil from internal arc over.
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Mates
Tue Feb 10 2009, 02:54PM
Mates Registered Member #1025 Joined: Sun Sept 23 2007, 07:53PM
Location: Czech Rep.
Posts: 566
Open the coil can, remove the guts and dip it completely inside an oil bath. This will solve both - internal and external arcing problems. The internal arcing is usually caused the fact that iggy is never fully filled by the oil.There is always a an air pocket left inside
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