RE: toroid for my coil.

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

Original poster: "Luke" <Bluu-at-cox-dot-net> 

Thanx
This toroid sizing thing seems to be a huge issue of hit and miss,
observe and speculate, etc.

Thanx for the input.
Experience (other people's) is all I have to grab onto at this point.
:)

Luke Galyan
Bluu-at-cox-dot-net

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Saturday, January 24, 2004 3:04 PM
To: tesla-at-pupman-dot-com
Subject: RE: toroid for my coil.

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi Luke,

My big coil (15/60 NST, LTR, sync gap) now has a 8 x 32 toroid on it and
I
"still" think it is too small!  The arcs hit the ceiling and floor, but
it
still gets four streamers most of the time until one starts to really
dominate and reach out.

In my humble opinion, may it as big as you reasonably can.

I think the toroid an my small coil is too small too...

Cheers,

          Terry


At 09:51 PM 1/23/2004, you wrote:
 >Wait!
 >I was under the impression this size toroid might be too big and I may
 >not have break out.  If you are telling me I might have multiple
 >streamers rather than a single long one that means it could be bigger
 >right?
 >What would be in your opinion the largest size I should put on this
 >system?
 >
 >Luke Galyan
 >Bluu-at-cox-dot-net
 >
 >-----Original Message-----
 >From: Tesla list [mailto:tesla-at-pupman-dot-com]
 >Sent: Friday, January 23, 2004 7:10 PM
 >To: tesla-at-pupman-dot-com
 >Subject: RE: toroid for my coil.
 >
 >Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com>
 >
 >The 4x30 toroid will definitely work; you may just get multiple shorted
 >streamers rather than the longest possible single streamer.  Mostly a
 >personal preference thing.
 >
 >Gary Lau
 >MA, USA
 >
 >
 >Original poster: "Luke" <Bluu-at-cox-dot-net>
 >
 >I will be using a 15/60 NST a cap size of about .016 mfd and I have
 >finally
 >decided to go the static spark gap route for this coil and attack the
 >SRSG
 >later if I get the bug. (thanx everyone for the info there may be a
 >round 2)
 >
 >I was going to use a toroid of 4" minor dia and about 18" major dai.
 >I happened to buy some flexible duct from McMaster carr and it is 4
1/8"
 >
 >dia but the smallest I can roll this stuff is like a 30" outer dia.
 >would
 >this be out of the question for my toroid size?  I would still be at eh
 >4"
 >minor dia so the voltage breakout would be the same (I think)  but I am
 >a
 >bit confused as to how to figure out if there will be enough joules
 >produced to use a toroid of this size.  Seems there is no exact way of
 >figuring this out as a definite.  So thought I would ask the
experienced
 >
 >ones what they thought.
 >
 >I like this ducting and really want to use it.  But if there is no way
 >it
 >will work with this coil ill have to figure something else out.
 >
 >Luke Galyan
 >Bluu-at-cox-dot-net