Re: Holes in the secondary

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi Tim,

All my secondaries have steel screws through them for terminal 
connections.  I have never arced inside a secondary.  Sometimes the raw 
screw end will corona and arc a bit to the outside.  Having said that, if 
the coil is really under a lot of voltage stress it "might" arc over.  I 
think a nylon screw would be fine.  I have done that for a solid state coil 
where the primary to secondary clearance was small and the nylon screws 
worked fine.

If one looks at the field stresses:

http://hot-streamer.com/temp/DRSSTC-1000-01.gif

The inside of the coil is pretty tame.  But do use small say #4 or #6 
screws with round heads and all just to avoid pointy edges sticking out.

Cheers,

        Terry

At 06:02 AM 7/13/2005, you wrote:
> Hi All,
> I guess I didn't make myself clear...
> I'm not saying put a wire through a hole and then put a screw in. I don't 
> intend to put ANY wire into the inside of the secondary. I'm suggesting 
> drilling a hole, thread that hole, put a nylon screw in the hole (with a 
> nylon washer), and then run the secondary wire under the washer (not 
> wrapped, just use the screw/washer to press the wire against the coil 
> form). This would be used to hold the end of the secondary coil.
>
> NOW whatcha think?
> ;-)
> Tim