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Re: outdoor coils



Original poster: "Langer Giv'r" <transworldsnowboarding19@xxxxxxxxxxx>

hi, I live in saskatchewan, Canada, and temperatures at least 6 months of the year are -10 or lower. Ive been working on my coil for about 7 months and still havent finished, but its the peak of winter and im jsut about done. Does this mean i have to keep my coil inside for the rest of the winter without even a test? that would not be very good haha. oh well. Thanks


From: "Tesla list" <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: outdoor coils
Date: Thu, 17 Nov 2005 17:04:10 -0700

Original poster: "Brian" <ka1bbg@xxxxxxxxxxxxx>

Hi, rather than take a chance i would keep the secondary inside for the
winter. cul brian f.

----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, November 17, 2005 10:34 AM
Subject: Re: outdoor coils


> Original poster: "MIKE HARDY" <MHARDY@xxxxxxxxxx> > > Lets hear more about coils in cold conditions. I live in Wisconsin. It's > going to get down in the teens tonight. This'll be the first winter my coils > see. Will my coils survive? One is PVC coated with glyptal, then wound and > polyurethaned. Other is acrylic wound and coated the same. Third isn't > wound, but fiberglass coated in glyptal. > > ----- Original Message ----- > From: "Tesla list" <tesla@xxxxxxxxxx> > To: <tesla@xxxxxxxxxx> > Sent: Thursday, November 17, 2005 12:16 AM > Subject: Re: outdoor coils > > > > Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx> > > > > Hi Chris, Robert, > > > > Interesting! I'm in CA these days but started coiling in Minnesota > > which is cold cold cold. I didn't use PVC but sonotube at that point > > which I did coat inside and out with a thinned-out urethane (to > > absorb into the sonotube). Due to the temp swings, I decided to use > > Marine Spar Varnish for the outer coating. This particular varnish > > remains flexible (hard to the touch). I've never had any problems > > with cracking, shrinking, expanding, etc.. Just wanted to mention > > that as it's available at all hardware stores. Even though I'm in > > sunny CA, I still use the same varnish. It's been a nice varnish and > > goes on thick. > > > > Take care, > > Bart > > > > Tesla list wrote: > > > > >Original poster: robert heidlebaugh <rheidlebaugh@xxxxxxxxxxxxxx> > > > > > >Chris: I am at 7200 ft alt.so temprature extreams are a serious > problem.PVC > > >has a large expansion ratio so it is very important that your coating be > > >well bonded to your coil form or the secondary coil will slide off the > coil > > >form in cold weather. I beleave I have finaly solved this problem by > rough > > >sanding my coil form and pre coating the form before winding my coil > while > > >the coating is still slightly soft so the wire will not slide off. I have > > >had my coil drop 2 inches down the coil form in the cold. > > > Robert H > > > > >