Re: New coiler :)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "david baehr by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dfb25-at-hotmail-dot-com>


Don't use sc 40 pipe, use thin wall drain pipe...at 3.5" dia. ,you shouldn't be
more than 12" high...your wire is to large, consult a wire size table and aim
for 700-800 turns, my 8"-25" coil used #20 wire, got  6' + sparks

>From: "Tesla list" 
>To: tesla-at-pupman-dot-com 
>Subject: New coiler :) 
>Date: Fri, 21 Sep 2001 12:35:32 -0600 
> 
>Original poster: "Jonathan Senger by way of Terry Fritz " 
> 
>Hey guys, 
> 
>I'm a 17 year old newbie coiler from Auburn, Alabama. I was 
>wondering if there are any coilers in my area? My first attempt 
>at a coil was a flop... I've been looking at the tesla ring and various 
>Tesla sites and I think I see a few probs with my design. Sorry if this post 
>is a bit long. 
> 
>I used a 15kV 30 mA NST, SW caps, and a simple 1 gap spark gap with 
>no quenching(could this be the problem?). My primary was 11 turns of 
>1/4" Cu tubing, with 1/4" spacing wound up the outside of a plastic beach toy 
>bucket and secured with cable ties(could overcoupling be the problem?). My 
>secondary is wound on a 1.5 foot long sched 40 PVC pipe with an OD of 
>3.5"(I just read something about sanding the PVC and baking it in the oven to 
>drive off moisture and then sealing it with varnish, how important is this?) 
>I painted the PVC with a thin layer of beeswax to help the wire stay while 
>I was winding(bad idea?). I hand wound 20 awg magnet wire for 14"(not 
>enough turns?) and passed the ends through a hole in the PVC at each 
>end of the winding. I probably should have used a shellac or varnish to seal 
>it but I don't think it would have stuck to the wax anyway. To seal it i used 
>paper 
>towels soaked in paraffin(this was probably a bad idea). For a discharge 
>terminal I 
>used a 6" foam sphere wrapped in aluminum foil and rubbed smooth. I had no
idea 
> 
>how to tune it right so i just tried a bunch of spots, I also didn't know how 
>wide 
>of a gap I should use. I was able to get 5 inch very thin(less than a mm 
>thick) 
>spindly sparks if I put a grounded cable close to the sphere, but no 
>brush discharge or streamers. 
> 
>Any advice would be appreciated, thanks :) 
> 
>Jonathan Senger 
> 
> 
> 
> 
> 


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