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Re: Coil success on first big run - but (help) safety gap fires alot!



In a message dated 4/21/99 5:34:00 AM Mountain Daylight Time, 
tesla-at-pupman-dot-com writes:

> Just to say I've got my coil up and running and am working on tuning. I
>  >have got 29 inch sparks for 1000w in, so it's only a start. It was
>  >really beautiful once it got dark though! I was wondering how critical
>  >the tuning was - would say 1/2 a 1/4 turn adjustment on the primary make
>  >a lot of difference? I have it at 6.5 turns at the mo with a small
>  >topload (a garden soil riddler!). I may try going for the big 24 inch
>  >toroid tomorrow, but I will need to set up a stike rail before this.
>  >
With so few turns, 1/4 of a turn could make a significant difference.  My 
setup tunes at about 10 turns and is fairly sharp in tuning.  I use a tuning 
coil for fine tuning it. It has 10 turns and measures about 1 uH, or about 
the equivalent of one outer turn if all 10 turns are tapped.  I found this to 
be much easier than trying to tap around the primary coil.