RE: [TCML] Poly thickness (does matter!)

["miles waldron" <mileswaldron@xxxxxxxxxxx>]

In my experience poly insulating qualities and doping methods make
significant improvements in overall coil performance. The quality of the
secondary coil definitely contributes to tuning and streamer length.

Miles Waldron
678-557-7737



-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of dr.hankenstein@xxxxxxxxxxxxx
Sent: Saturday, July 12, 2008 6:14 PM
To: Tesla Coil Mailing List
Subject: [TCML] Poly thickness (does matter!)


Gary,

I beg to differ with you on this point. I used to think the same thing until
we did a recent experiment: I refinished an old secondary, one I had been
using for 14 years and was astonished what 20+ coats of fresh polyurethane
did for the coils performance. Noted was the elimination of a "corona skirt"
under the gradient ring (top load). The occasional racing sparks have been
eliminated not to mention I now have the closest coulpling possible with
this coil. I used to use a 1" spacer under the secondary to decouple the
coil. Spark length has increased 4 to 6" as well. For more details, please
check out the article I wrote on this experiment at:
http://www.audiotesla.org/corona%20experiment.htm

Regards,

Woo 


> [Original Message]
> From: Lau, Gary <Gary.Lau@xxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Date: 7/1/2008 10:01:59 AM
> Subject: RE: [TCML] Poly thickness
>
> I'm not convinced that coating a secondary with anything significantly 
> improves it electrically.  Mostly it's to keep the windings from 
> shifting on the form, and to provide a small amount of armor should 
> something bump into it.  And probably most importantly, it just makes 
> the coil look nice and shiny.  No matter what one coats the secondary 
> with, it's still vulnerable to racing sparks if it is overcoupled.
>
> Regards, Gary Lau
> MA, USA
>
> > -----Original Message-----
> > From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On 
> > Behalf Of jhowson4@xxxxxxxxxxx
> > Sent: Tuesday, July 01, 2008 8:50 AM
> > To: tesla list
> > Subject: [TCML] Poly thickness
> >
> > All this talk of putting poly on coils has got me wondering (how 
> > many coats of poly is enough) i recently wound a 3" by 24" secondary 
> > with some #28.  first i coated the form with
> > 1 coat of poly.   then i wound the coil.  Then I put on 4 more coats of
poly.  is that
> > enough? I ha\ve not had any problems with it yet.
> >
> > jay howson
>
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