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COILS EARTH

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brian 450
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COILS EARTH

#1 PostAuthor: brian 450 » Sun Jan 10, 2010 5:53 pm

Do dyna coils earh on frame from mounting bolts?
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knut
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#2 PostAuthor: knut » Sun Jan 10, 2010 6:01 pm

don,t think so,there,s two terminals on one side of the coil for pos and neg connections, the experts wil be along soon to correct me if i,m wrong :wink:
what,s there to say except we,re all mad on here.
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kev edwards
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#3 PostAuthor: kev edwards » Sun Jan 10, 2010 7:05 pm

Looking at the clymer manual they ground through the points,but i have always made sure where the coil bolts are i get a good contact.
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#4 PostAuthor: Big Fluff » Sun Jan 10, 2010 8:22 pm

No 'additional' ground required Brian.

Make sure that you use plastic or nylon spacers between the coils and the frame, as the terminals are so close power can easily arc across and cause a dead Zed.!

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#5 PostAuthor: Rich » Mon Jan 11, 2010 7:52 pm

Better off using brass spacers and heatshrink around them. Brass conducts the core heat away better.
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#6 PostAuthor: PAULJAC47 » Mon Jan 11, 2010 9:00 pm

Bit confused on this thread i assumed the coils were earthed through the mounting bolts to the frame but i was going to run an extra ground wire to the frame anyway,some replies on this thread say to put insulators between the coils and the frame?.....!!!!!!!
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#7 PostAuthor: knut » Mon Jan 11, 2010 9:32 pm

the insulators are to prevent a short circuit between the frame and coil terminal.the mouting bolts will take the heat away ,as well any "eddy currents" (they cause heat by the way !)
what,s there to say except we,re all mad on here.
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#8 PostAuthor: Ginger Bear » Tue Jan 12, 2010 3:31 pm

Here's how I mounted & insulated my coils.
Image
Oddly enough Mikey was getting all sorts of electric shocks on his Zed, until he removed a bit of powdercoating & earthed his coils directly to the frame, although that could have been because the wired earth was a bad one. :shock:
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#9 PostAuthor: PAULJAC47 » Tue Jan 12, 2010 7:02 pm

See what you mean bear, that bottom terminal is very close to the mounting bolt will put some sleeving to stop shorting of low tension terminal to frame do you think its a good idea to run an extra ground wire from the coil metal core to the frame and not just rely on the mounting bolts?
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#10 PostAuthor: Ginger Bear » Tue Jan 12, 2010 7:55 pm

PAULJAC47 wrote: do you think its a good idea to run an extra ground wire from the coil metal core to the frame and not just rely on the mounting bolts?


If your wiring is sound, then you shouldn't need to, but it certainly won't do you any harm.
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