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Spark plug gap, was:Re: Got my first coil running!!


----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, February 16, 2000 9:02 AM
Subject: Re: Got my first coil running!!


> Original Poster: "ross andrews" <sflourine-at-home-dot-com>
>
>
> Hi Jon,
>
> Great looking coil!  I wish mine had turned out that nice! :P
>
> One thing I'm wondering about tho...I noticed that your spark gap
> consists of 8 or so spark plugs in series - I don't know right off hand
> if this makes a big difference, but what about the resistors that are
> built in to most plugs?  All wired in series, they might rob you of some
> power, no?  Anyone know the specifics?
>
> Ross

Ross,
 I realized that the Bosch plugs have internal resistors, and I have
switched to non-resistor Champion plugs. I measured one of the resistor
plugs and it was something like 5k ohms (I don't remember for sure). They
got very hot, very quickly! The non-resistor plugs seem to work very well!

Jon



> Tesla List wrote:
> >
> > Original Poster: "Jon Lagler" <rockcrawl-at-netzero-dot-net>
> >
> > I got my first Tesla coil running yesterday. My longest streamer was
about
> > 16-18" to a hanging grounded object with a 12/30 NST and compressed air
> blowing
> > across my spark gap. I was wondering how I will know when it's pefectly
in
> > tune. Is there a way to tell other than spark length? How hard is it to
find
> > just the right point? My coil can be seen at:
> >
<http://www.fortunecity-dot-com/silverstone/impala/403/tesla.html>http://www.fo
> > rtunecity-dot-com/silverstone/impala/403/tesla.html .The primary is 50' of
1/4"
> > tubing, about 14.5 turns, and the secondary is 22" of 22 ga. aluminum
wire on
> > PVC drain pipe (thin wall). I know Alum wire may not be the best, but I
> > accidently bought 29 pounds of it. As soon as I can get ahold of some 22
ga
> > copper, I'll make an identical coil and compare them. I'm using a 4"
> dryer duct
> > toroid.
> >  Oh, and I did manage to fry a balast in a flourescent light above.
>
>
>

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