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Re: [TCML] Secondary to toroid ?
I rarely run a TC without "something else" on top in addition to the toroid.
I do a lot of long exposure stuff with rotating breakout points so I need a
robust section on top to support motors and the torque associated with
stopping and starting a rotating rod that may be 14ft in length. I don't
want anything that penetrates the end-cap though.
On the small TC I use a glued on plastic connector in which I can slot in a
3 inch PVC tube and on the big TC I have polypropylene welded supports to
support the motor, battery and switch assemblies.
Some photos of the various appendages in use
http://tesladownunder.com/TeslaRedAlert2Full1000.jpg
http://tesladownunder.com/Tesladownunder's%20Car%20Theft%20Pevention%201000.jpg
http://tesladownunder.com/TeslaPoolGloveEnd1000.jpg
http://tesladownunder.com/TeslaGDCFortySevensBook01991000.jpg
http://tesladownunder.com/Tesla18Dalek10003Ft.jpg
http://tesladownunder.com/IonicSpinner14ftTesla.jpg
Peter
----- Original Message -----
From: "bartb" <bartb@xxxxxxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Monday, August 25, 2008 8:16 AM
Subject: Re: [TCML] Secondary to toriod ?
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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