Re: Large Toroid? (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Gerry Reynolds <greynolds@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Wed, 20 Dec 2006 07:43:16 -0600
From: David Rieben <drieben@xxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Cc: David Rieben <drieben@xxxxxxxxxxxxxxx>
Subject: Re: Large Toroid? (fwd)

Hi Greg,

I built that toroid from a 30' length of 12" diameter super-
flexible stretch and compress aluminum duct hose (part #
       5525K49) from McMaster-Carr (www.mcmastercarr.com)
      It comes VERY compressed to only about 36" legnth IIRC
      and actually has a bit of weight to it in the box. It actually took
      a bit of brute strength to strecth it to the desired form by my
      self and you would really need a friend to assist in this process.
      It is more expensive but certainly more dent RESISTANT
      (not dent PROOF) than the cheaper flex duct that McMas-
      ter also sells. After forming it into the desired toroid, I wrapped
      it with Nashua aluminum duct tape, available at Home Depot.
      IIRC, it took about 3 rolls to complete the job, so at $91+ S&H
       for the duct tubing plus about $13 a roll for the tape, I have a
giant
      12 x 56 toroid for < $150 - not quite as pretty as a professionally
      spun aluminum toroid from O.W. Landergren, but probably about
      $2K cheaper and it still makes them long sparks! ;^))

      David Rieben


----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Wednesday, December 20, 2006 12:49 AM
Subject: Large Toroid? (fwd)


> Original poster: Gerry Reynolds <greynolds@xxxxxxxxxx>
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> Date: Tue, 19 Dec 2006 19:19:56 -0800 (PST)
> From: G Hunter <dogbrain_39560@xxxxxxxxx>
> Subject: Large Toroid?
> To: tesla@xxxxxxxxxx
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> David,
>
> Regarding your big, impressive coil at:
>
> http://www.teslauniverse.com/members/drieben/
>
> Where did you get the big torus?  Did you buy it or
> build it?  Can you describe its construction?
>
> Cheers,
>
> Greg
>
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