Re: Static Gap Spacing

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

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi Erik,

At 08:17 PM 12/3/2001 -0800, you wrote:
>So would the RF ground be the same ground you have the secondary grounded
>to?

Yes, I ground all the RF area stuff to the RF ground.  Different people
have different thought on this but that's what "i" do.

>Also someone said that the lucite/lexon would melt, is this true even if I
>use 12 3" peices of pipe or will they stay cool enough
>Thanx
>-Erik

It depends on how long you run.  "i" sort of think it will not get too hot
unless you run for a really long time with a 15/30 NST.  You can use dry
wood unless you live in a humid place.  Glass is another option.  I would
just keep an eye on it.  If it starts to get too hot, a small fan would
easily cool it off.  I had so much copper in mine it is hard to say.  Heat
was not a problem with mine.  However, others that made my gap with fewer
pipe sections may know more.

Another person said they went from "my" gap to a TSG gap.  Maybe you could
bargain to get their old terry gap...

Cheers,

	Terry


>----- Original Message -----
>From: Tesla list <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Monday, December 03, 2001 5:53 PM
>Subject: Re: Static Gap Spacing
>
>
>> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
>>
>> Hi Eric,
>>
>> At 05:11 PM 12/3/2001 -0800, you wrote:
>> >Terry,
>> >I was wondering how do I know where to put the long pipe to start? I mean
>> >with a 15kv/30ma how do I know what is too much voltage and what happens
>if
>> >I put the long pipe to far back? Also I'm wondering what type of
>transformer
>> >you're using with this gap, will I need 60 sections for running it with
>my
>> >transformer(15/30)?
>>
>> I used it mostly with my 15/60 NST.  I only had 0.004 inch gaps which is
>> too small.
>>
>> Just run the gap with the bare NST.  Without any caps or anything
>connected
>> to the NST, it will output 15kV exactly.  Find the furthest point that
>will
>> still allow the gap to fire and you know that is at the max firing voltage
>> for your NST.
>>
>>
>> >Also I'm curious as to how you grounded the long safety pipe, is it
>gorunded
>> >to the same grounding rod as the primary or to a seperate one or what?
>> >Thanx
>>
>> I ground it to the case of the NST.  I also ground the case of the NST to
>> the RF ground.
>>
>> Cheers,
>>
>> Terry
>>
>snip...