Small tesla coil (1sq ft) findings

From:  Malcolm Watts [SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent:  Tuesday, June 23, 1998 12:59 AM
To:  Tesla List
Subject:  Re: Small tesla coil (1sq ft) findings

Hi Jeff,

>From:  Jeff Corr [SMTP:corr-at-enid-dot-com]
>Sent:  Thursday, June 18, 1998 12:45 AM
>To:  tesla list
>Subject:  small tesla coil (1sq ft) findings
>Hello all...   in order to have a tesla coil in my college
>dorm room next year :-)  I had to construct a special one.
>It is mounted on a 12"x12" plywood section, the secondary being only
>12" tall.
>The reason I post this here is I find it interesting this coil can produce
>12" long sparks, the length of the coil itself.
>Just thought that someone else might be interested in duplicating this
>coil as it is small enough to carry anywhere, and still performs very
>Here are the specs :
>power  level - 9kv, 30ma 270VA
>capactitor - .004uf , rated at around 12kv (physical dimensions 8" long, 3"
>in diameter)
>primary - helical, 10 turns of #20 solid copper, turns 1/8th inch apart.
>secondary 1.5"x12", #32 copper enambled.
>Spark gap, single gap, half an inch apart.

With that gap setting, what is your estimate of the firing rate? It 
must be going at a rather considerable voltage.