Re: Small coil questions?

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

Original poster: Peter Lawrence <Peter.Lawrence-at-Sun-dot-com> 

Guys,
      I've wound four mini coils at 3.5"D x 12"H, with #28, #32, #36, and #38
wire. My subjective opinion is that the #38 gives the best sparks. All these
thin wire ohmic and skin-depth issues seem to be irrelevant at mini-coil
dimensions, what seems to matter is getting the Fres down.

Pete Lawrence, YMMV-vale, CA.


 >
 >Original poster: Ed Phillips <evp-at-pacbell-dot-net>
 >
 >Tesla list wrote:
 > >
 > > Original poster: "Mark W. Stolz" <mark_w_stolz-at-hotmail-dot-com>
 > >
 > > >Original poster: dhmccauley-at-spacecatlighting-dot-com
 > >
 > > <snip>
 > >
 > > >One thing about tesla coiling is that merely copying someone elses design
 > > >doesn't necessarily mean a successful design.
 > > >Actually, I think you could do better than Gary's secondary.  If i 
remember
 > > >correctly, he used something like 32 to 36 AWG to wind his secondary
 > > >which may be a bit too thin.  Gary himself stated this as well.  I 
think 28
 > > >to 30 AWG wire would be a good size for a mini-coil.
 > >
 > > Dan,
 > >
 > > I would have to disagree about 32 AWG being too thin.  Though I use a
 > > slightly higher voltage(7.5kV) on our 2.5" small coil, it is wound with 32
 > > AWG and produces similiar results.
 > > http://teslacoils4christ-dot-org/mark.stolz/2inch/2inch.html
 > >
 > > Mark Stolz
 > > Pearland, TX
 > > http://teslacoils4christ-dot-org/
 > >
 > > >I also have a mini-coil design that has been lately putting out 13" 
to 14"
 > > >streamers to a strike target.  I use the same exact transformer as Gary's
 > > >with almost identical
 > > >output current (half-shunts removed)
 > > >You can get information on my mini-coil at:
 > > >
 > > >http://www.spacecatlighting-dot-com/teslacoil4.htm
 > > >
 > > >Dan
 >
 >	You should add to that "if you're man enough and patient enough to wind
 >it"!  I have a 1-7/8 OD X 6 coil wound with #36 and I was barely man
 >enough - took a couple of hours turning the form by hand and feeding the
 >wire on with my thumb providing both tensioning and keeping the turns
 >snug against each other.
 >
 >Ed
 >
 >