Re: [TCML] Secondary to toriod ?

[bartb <bartb@xxxxxxxxxxxxxxxx>]

Hi Stanley,

After reading my own description of what I did, I thought it best to 
just show some pics.
http://www.classictesla.com/temp/toroid-support-1.jpg
http://www.classictesla.com/temp/toroid-support-2.jpg
http://www.classictesla.com/temp/07-04-2008%20002.JPG

BTW, for those thinking (OMG, metal screws attaching Plexiglas to sec 
form!). No corona, no arcing, no problems (and mechanically strong!).

Take care,
Bart

bartb wrote:
> Hi Stanley,
>
> I use a carriage bolt (6"L) on my 8.5" coil. I have a Plexiglas cap on 
> top of secondary form. The underside of the bolt is gooped to help 
> prevent any internal flash-overs. The secondary winding runs along the 
> topside to the bolt (same as Jonathon's).
>
> What I wanted to point out is that the bolt will need to mechanically 
> support the weight of the toroid. In my case, I'm using a spun Al 9" x 
> 30" toroid, so it's a bit on the heavy side. What I did was to drill a 
> center hole for the carriage bolt in the middle of a 4.5" pvc cap and 
> simply used the carriage bolt nut to secure it to the Plexiglas. The 
> toroid is fitted with a similar pvc cap. When I install the toroid, I 
> simply align the carriage bolt through the center hole in the toroid 
> and let it slide down. The toroid and secondary caps find eachother. 
> One slides into the other providing the mechanical support and the 
> carriage bolt electrically connects the toroid (no strain on the 
> carriage bolt itself).
>
> Hope I described that well enough? Basically, the bottom surface of 
> the pvc cap provides a large surface area with which the weight is 
> distributed over the flat Plexiglas main top cap. Worked out great!
>
> Take care,
> Bart
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