RE: [TCML] Polyurethane Finish Questions

[david baehr <dfb25@xxxxxxxxxxx>]

i have not been reading this topic very closely, .,but , has anyone tried the T.Fritz idea of wraping the sec. with  a shrink wrap type product ??   Also, can a conical sec. tolerate tighter coupling as compaired to the typical cyl. shape ?.....heck, i dunno :-(

 


 
> From: Gary.Lau@xxxxxx
> To: tesla@xxxxxxxxxx
> Date: Thu, 23 Apr 2009 13:08:10 +0000
> Subject: RE: [TCML] Polyurethane Finish Questions
> CC: 
> 
> 
> 
> > -----Original Message-----
> > From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> > Behalf Of Jim Mora
> > Sent: Thursday, April 23, 2009 4:08 AM
> > To: 'Tesla Coil Mailing List'
> > Subject: RE: [TCML] Polyurethane Finish Questions
> > 
> > Hi Gary,
> > 
> > I like to think that the oil base poly I use does some electrical as well as
> > mechanical damage protection.
> 
> I would like to think that too, but I've never seen or heard evidence that it would. If I increase the coupling too high on any secondary, I'm going to see racing arcs, regardless of whether it has a thick coating of poly. One can coat their coils with Dolph's or anything else and report wonderful results, but unless the reporter has an identical secondary available with a different coating to compare against under otherwise identical operating conditions, I would view the wonderful report with suspicion. Is the benefit you're seeking just the ability to operate at a higher coupling without racing sparks? 
> 
> If racing sparks occur on both coated 
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