RE: Where to look?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Vanderputten, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>" <gvp-at-pvaintl-dot-com>

Jim

I recently built a very similar coil - based all measurements on that spread
sheet everyone uses, I mean exactly and the coil responded as predicted. 

MY secondary 3 1/2 " by 900 turns of 22.

You have more cap than I  -15kv/ .01 Vs 30kv/.0066

My primary has 16 turns, yours about 12.

My tranny is a 12/30 or 12/60, hence the larger Kv on the cap

Sam RQ gap - 8 gap pipe with fan

Torroid - 6" copper float

I have a 'Fritz/Lau" LCR protection circuit for the tranny and my apartment,
but this shouldn't affect performance.

Tuning - I use the entire primary and most of the gap (adjusting the latter
just changes the streamer in length Vs form)

My coil runs cool and noisy with about 15" arcs to a good rf ground at 70vac
on the variac- easy to get more once I leave the building.

 
I think that you can goose yours up two ways  -

Try a 9/60 tranny - very significant change when I went from 12/30 to 12/60.
Your cap's 15 KV is too low to take on a 12kv. 

Increase the primary turns

Good luck.

Gary


Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<ghunter31014-at-yahoo-dot-com>

Spark Gap! If you only improve one thing, improve
that.

My $.02 worth,

Greg
http://hot-streamer-dot-com/greg

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <jim-at-jlproduction-dot-com>
> 
> Hi all,
> As I prepare to have at my coil this weekend I was
> wondering where I
> should focus my attention as to better
> spark length?
> I realize this is the 10,000 dollar question and
> also that experiment is
> king, but any hints are more than
> welcome.
> To give a pretty good idea of how I did on round one
> I have used Paint
> Shop Pro to enhance the contrast on
> one of the better pics I took. This modified pic can
> be seen here...
> http://www.jlproduction-dot-com/sparkmod1.jpg
> 
> Or the whole site can be seen here...
> http://www.jlproduction-dot-com/Tesla.html
> 
> 
> The toroid is 14 inch diameter to give you a scale
> to work with.
> 
> Thanks in advance for any and all ideas,
> Jim
> 
> 
> 
> ---
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