[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: [TCML] Winding the primary
If you have closed standoffs you will need the holes to be a little larger than the tubing OD. I don't recall, but I think mine was 1/32" larger. With closed standoffs, you can only start from the outside. It is a royal pain and you'll get blisters, but it can be done with hard work and patience:
http://www.hot-streamer.com/adam/primary.htm
This is how most folks do it:
http://www.hot-streamer.com/adam/bigass_coil/Primary001.jpg
http://www.hot-streamer.com/adam/bigass_coil/Primary002.jpg
http://www.hot-streamer.com/adam/bigass_coil/Primary004.jpg
Adam
--- On Wed, 7/9/08, Stephen J. Hobley <shobley@xxxxxxxxxx> wrote:
> From: Stephen J. Hobley <shobley@xxxxxxxxxx>
> Subject: RE: [TCML] Winding the primary
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Date: Wednesday, July 9, 2008, 6:24 AM
> Thanks, these are closed standoffs - that is they have holes
> drilled through them and so are not open along the top edge.
> It is 0.25" copper tubing.
>
> I'll have another go starting from the middle.
>
> Steve
>
>
> Stephen Hobley Photography
> www.stephenhobley.com
> 317 201 4281
>
> The Laser Harp Project - www.stephenhobley.com/build
>
> ________________________________
>
> From: tesla-bounces@xxxxxxxxxx on behalf of Quarkster
> Sent: Wed 7/9/2008 12:30 AM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Winding the primary
>
>
>
> Steve -
>
> What is your primary conductor? If you're using
> copper tubing, here are a few tips:
>
> 1. Use virgin refrigeration tubing, and leave it in the
> coiled shape that it comes in. Don't try to re-use
> "salvaged" tubing if you want a nice looking
> primary. Copper tubing "work-hardens" and
> stiffens very rapidly as you deform it, so deform it as
> little as possible.
>
> 2. DO NOT try to straighten the tubing, then re-form it
> into a spiral. The tubing will work-harden, then is likely
> to kink and become unmanagable.
>
> 3. Have an assistant hold the coil of tubing about a foot
> above your primary forms, and just let one coil drop down at
> a time. The typical diameter of a coil of rerfigeration
> tubing is around 18", so I start at the end of the
> primary that is closest in diameter to the diameter of the
> coil of tubing. For a small diameter primary this means
> starting at the OUTSIDE of the primary form and wind
> inward. For a large diameter primary, this means starting
> at the INSIDE of the primary form and winding outward. This
> way the tubing requires minimum deformation initially, and
> then must be gradually formed into a larger or smaller
> radius as you move outward or inward.
>
> Regards,
> Herr Zappp
>
>
> "Stephen J. Hobley" <shobley@xxxxxxxxxx>
> wrote:
> We just realized that we can't get the primary wound
> into the standoffs without some major kinking.
>
> Is there a trick to winding the copper tubing into the
> standoffs with the minimum of distortion?
> It's proving to be harder than we first thought.
>
> Steve
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla_______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla