Re: first non NST coil questions

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>

Hi Justin, all,

I'm not sure what the "magic number" is to where
the power levels become too great for forced air
cooling alone to adequately quench a spark gap.
However, I do think that there comes a point to where
it's more practical and economical to just upgrade to
a quality rotary gap than to employ the draconian mea-
sures that would be required to properly quench an
air cooled stationary gap system. IIRC, Richard Hull
used to state that anything over 3 kVA required a
rotary gap but I think there are a few coilers that have
built successful RQ style gaps running power levels
up to 5 or 6 kVA. IMHO, with really large coils (>
10 kVA) it is sometimes necessary to use a combi-
nation of rotary and air cooled stationary gaps in series
to help commutate the generated heat. That's what I do
with my Green Monster that runs as high as 15 to 20
kVA power levels and Cameron Prince also does this
with his large coil.

http://www.teslauniverse.com/members/drieben/
http://www.teslauniverse.com/gallery/v/coils/polepig/

My $.02,
David


----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, March 22, 2007 10:05 PM
Subject: Re: first non NST coil questions


> Original poster: Justin <rocketfuel@xxxxxxxxxxxxx>
>
>
> Hi Jared,
>
> What do you mean by high power levels?  A friend in town showed me his
> design which he claimed could withstand 5kVA pretty well.
>
>
> Justin
>
>
>  > Original poster: "Jared Dwarshuis" <jdwarshuis@xxxxxxxxx>
>  >
>  > Hi: Justin
>  >
>  > It is nearly impossible to get high power levels to quench with a
sucker
>  > gap.
>  >
>  >
>  > Sincerely: Jared Dwarshuis
>  >
>  > "If Tesla coils are outlawed, only outlaws will have Tesla coils"
>  > "They will get my pole pig when they pry it from my cold dead fingers"
>  >
>  >
>