Re: 116" sparks NO ROTOR
From: richard hull[SMTP:rhull-at-richmond.infi-dot-net]
Sent: Saturday, January 10, 1998 6:09 AM
To: Tesla List
Subject: Re: 116" sparks NO ROTOR
At 09:35 AM 1/10/98 -0600, you wrote:
>Sent: Friday, January 09, 1998 11:25 PM
>Subject: 116" sparks NO ROTOR
>I got my 10" TC out Saturday evening Jan 3rd and set it up in the drive way
>with the help of a friend. Maximum measured spark was 116" long with no
>I was surprised that the spark gap worked so well. I have been thinking
>about building a rotor but now I am not sure I need one. I noticed by
>adjusting the fan speed on the spark gap it mades a big difference on spark
>output. I found with the variac set at about 75% I got the longest spark
>output. If I increase or decrease the variac by 5% the spark output would
>drop. I got several 30 second runs with no over heating problems.
>This was something we stressed here at the TCBOR in our first tapes back in
1989! My first article for TCBA news stressed that the rotary was a vanity
toy for the new Teslaphile. The rotary gap is not a rosetta stone to long
sparks or even good operation! It is not even needed until over 5KW, though
it will often appear to improve the performance of a poorly thought out
system under 2KW!
Properly designed static gaps have been used by our group and others in K=.4
coupled magnifiers with no rotary up to 3KW!!
Too many rush to the rotary gap as a solution for early poor design.
Your coil sounds great, good luck with your fuutre efforts.
Richard Hull, TCBOR