RE: [TCML] secondary coil form

["John Paul Gripp" <pupman@xxxxxxxxxxxx>]

I am not sure if anybody has tried Ceme-tube before, but it is real cheap and looks like it would be perfect for the job!  It is an HDPE version of the old Sonotube (cardboard) concrete forms.  

http://www.menards.com/main/building-materials/concrete-cement-masonry/forming-tubes/12d-x-48l-standard-ceme-tube/p-87616.htm

JP

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of Carl Noggle
Sent: Monday, February 13, 2012 9:21 AM
To: Tesla Coil Mailing List
Subject: Re: [TCML] secondary coil form

Thanks, David,

I didn't know about duct PVC tubing.  Sounds ideal.  Did you wind the wire into epoxy or wind it on "dry", and did you varnish the coil afterwards?

If I get the kind of performance in your videos, I'll be mondo happy.  
Then I'll have to find a good name for it.  After twenty years it deserves some respect.

Thanks for the good information.

---Carl

PS--By the way, an ice cream freezer motor makes a really good winding drive.





> David,
> I saw Cameron has three videos of his coil, but two of them say it is running as SRSG, whilst the other is labelled, and behaves more like, ARSG. He doesn't alter the motor speed though, so hard to really tell.
> Are the SRSG labels  a typo, or is the coil setup such that he can quickly change motors, and cap values easily as a comparison?
> (I appreciate you personally may not know the answer - so apologies in advance if so)
>
> Regards Philip Tuck
> www.hvtesla.com.
>
> .
>
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of drieben
> Sent: 13 February 2012 02:13
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] secondary coil form
>
> Carl,
>
> I went to a local plastic supply company and asked for PVC "duct" pipe, of the 12" diameter variety. It is made for low pressure air duct ser- vice and has thin (~1/8" thick) walls. They had a 10 ft. piece of it and since at the time another fellow coiler was in town visiting me, we went in together to purchase it and then cut it in half so we would each have a 5 ft. long piece. Yeah, the large diameter PVC is a bit pricey (IIRC, around
> $5 to $6 / ft, back around '03, I believe). Both peices are still going strong in their respective coils to this day, though (Green Monster is mine and the other is in Cameron Prince's big SG coil).
> http://www.youtube.com/watch?v=t23mGSW2k6c
> http://www.youtube.com/watch?v=KRAgO2Xn-t8&feature=related
>
> David Rieben
>
>
> ----- Original Message -----
> From: "Carl Noggle"<cn@xxxxx>
> To: "Tesla Coil Mailing List"<tesla@xxxxxxxxxx>
> Sent: Sunday, February 12, 2012 12:59 PM
> Subject: [TCML] secondary coil form
>
>
>> Hey--
>>
>> What does everybody use for a form for winding a secondary?  My
>> secondary was (note the past tense) wound on a cardboard tube as a
>> temporary measure, and as such things go, it has lasted for 20 years.
>> However, an errant spark traveled between the wire and the cardboard in
>> the little triangular air space between the end of the last paper turn
>> and the wire, and that was the end of a long and illustrious career.
>>
>> The coil was 12 inches in diameter and 30 inches long, and I would like
>> to wind one about 10 to 12 inches dia by 36 inches long.  The obvious
>> choice is PVC pipe.  What is everybody's experience with PVC, and is
>> there something better in a reasonable price range?
>>
>> Thanks much for the help.
>>
>> ---Carl
>> _______________________________________________
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