RE: [TCML] finishing a secondary - would insulating foam be a good idea?

["Lau, Gary" <Gary.Lau@xxxxxx>]

Let's not loose sight of the fact that the material in question is basically the same stuff that most of us coat the exterior of our coils with - polyurethane.  If it were a problem, it's probably more of a problem on the outside of a coil than in the inside.

But I wholeheartedly agree with the consensus that none of this is necessary.

Regads, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of bunnykiller
> Sent: Saturday, October 04, 2008 10:34 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] finishing a secondary - would insulating foam be a good idea?
>
> Hey Thomas...
>
> Considering that air is a rather decient "insulator", I would have
> reason to believe that introducing a poly type of material inside the
> secondary is asking for trouble. Considering that most poly foams are a
> hydrogen/carbon molecular combination, any small arc would rapidly
> become a major burn trial and thus a carbon track for additional arcing
> to propigate thru....
>
> stick to a couple of baffles ( 1 at each end)  its already a proven
> method of internal arc reduction....
> but.. if you want to try the foam method, Im sure we all would like to
> know just how fast arcing does occur  ;)
>
> Scot D
>
>
>
>
>
> Thomas Ryckmans wrote:
>
> >Hello,
> >
> >
> >
> >I am finishing my 4 inches/10 cm diameter secondary, fitting a few PPE disks
> >inside to prevent arcing and a couple at the ends to help fitting with
> >primary base and the topload respectively
> >
> >Would it be a good idea to fill the secondary tube with insulating foam to
> >further prevent internal arcing? The foam is the one that come in canisters
> >and expands and harden once sprayed. Polymer is either polyurethane or
> >polystyrene.
> >
> >
> >
> >Many thanks for your comments,
> >
> >
> >
> >Thomas
> >
> >
> >
> >_______________________________________________
> >Tesla mailing list
> >Tesla@xxxxxxxxxxxxxx
> >http://www.pupman.com/mailman/listinfo/tesla
> >
> >
> >
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla