Re: [TCML] secondary coil form

[johnbrooks@xxxxxxxxxxx]

 For sheer viewing pleasure the Green Monster has
and will continue to be my favorite of big coils.
Despite my email address I am,,,
a joe in Texas

On Sun, Feb 12, 2012, at 08:13 PM, drieben wrote:
> Carl,
> 
> I went to a local plastic supply company and
> asked for PVC "duct" pipe, of the 12" diameter
> variety. It is made for low pressure air duct ser-
> vice and has thin (~1/8" thick) walls. They had
> a 10 ft. piece of it and since at the time another
> fellow coiler was in town visiting me, we went
> in together to purchase it and then cut it in half so
> we would each have a 5 ft. long piece. Yeah, the 
> large diameter PVC is a bit pricey (IIRC, around 
> $5 to $6 / ft, back around '03, I believe). Both peices
> are still going strong in their respective coils to this
> day, though (Green Monster is mine and the other 
> is in Cameron Prince's big SG coil).
> http://www.youtube.com/watch?v=t23mGSW2k6c
> http://www.youtube.com/watch?v=KRAgO2Xn-t8&feature=related
> 
> David Rieben
> 
> 
> ----- Original Message ----- 
> From: "Carl Noggle" <cn@xxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Sunday, February 12, 2012 12:59 PM
> Subject: [TCML] secondary coil form
> 
> 
> > Hey--
> > 
> > What does everybody use for a form for winding a secondary?  My 
> > secondary was (note the past tense) wound on a cardboard tube as a 
> > temporary measure, and as such things go, it has lasted for 20 years.  
> > However, an errant spark traveled between the wire and the cardboard in 
> > the little triangular air space between the end of the last paper turn 
> > and the wire, and that was the end of a long and illustrious career.
> > 
> > The coil was 12 inches in diameter and 30 inches long, and I would like 
> > to wind one about 10 to 12 inches dia by 36 inches long.  The obvious 
> > choice is PVC pipe.  What is everybody's experience with PVC, and is 
> > there something better in a reasonable price range?
> > 
> > Thanks much for the help.
> > 
> > ---Carl
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla
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> 
-- 
  
  johnbrooks@xxxxxxxxxxx

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