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Re: The 1500t secondary myth (long)

Original poster: "Mike" <induction@xxxxxxxxxxx>

Hi All,
Regarding the Robert Golka coil (or one of the versions) I recall his telling me it would hit the roof of the Wendover
hanger sometimes, don't know about the side walls, that was driven by a well pushed 100 kW generator though he had a 900 kW flatbed truck mounted unit available. This 51 feet diameter version has a picture I scanned in from some pictures somebody took while that coil was working. Took it off an 8 by 10 picture, then posted it at http://www.hot-streamer.com/mike2004/Golka%20Coil%20Wendover%20July%204,%201974.jpg Bob said figuring the top of coil height to where it hit was I think 81 feet and there were burns in the area of interest. It may have done further or less, I'll have to ask him. Metal building though and maybe a factor.
Of course things have changed, there have been several generations of coils since July 4th, 1974, which this picture had marked on the back. Two turn primary, 600 MCM wire, this was an amplifier, in general made to the Tesla spec. Of course he had to make use of some local materials as this was in the middle of nowhere and I think that included using no longer in use commodes made of porcelain as insulators to elevate the primary system.
All in all, the record holding interest should go to the current innovators so state of the art is always pushed further, though I still like the classic coils, there is a good respect for the new models.
Like the Enola Gay aircraft which once stood and was modified in the same hangar as this coil, both have dropped their payloads and moved into history. Bob is into more current science these days and we all move onward, though that is still high voltage. Must be we like the ozone!
Regards,
Mike
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, December 02, 2004 8:12 PM
Subject: Re: The 1500t secondary myth (long)


Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

The "Official" Tesla coil spark length record is for Bill Wysock's Model 13 is just slightly under 60 feet. Robert Golka's Coil and DC's coil have not been "verified" well yet. But if they have more info, that could change ;-)

There was a long thread on this about two or three years back...

Cheers,

        Terry


At 09:34 AM 12/2/2004, you wrote:
KVA Effects make 'em to 60 feet according to their promo video. I also saw a few websites that say Tesla made 130-footers from the 200-foot mast at Colorado Springs, though I didn't think he had access to a 1000+ kW required to make those.

Mike
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, December 02, 2004 10:07 AM
Subject: RE: The 1500t secondary myth (long)


Original poster: "Steve Conner" <steve.conner@xxxxxxxxxxx>

>Very interesting information.  I never thought much about the impedance
>factor.  Now, I'll have to go back and do some math work to see if I >can
>optimize my designs even more.

Well Dr. R, your coils are way bigger than anything I have simulated or
calculated, so Your Mileage May Vary :-\ In fact, it would be most
interesting if you could tell us the Zo values for some of your big coils.
I've seen pictures of the big boy that does 22ft sparks but I couldn't find
any data on # of turns, wire gauge, dimensions, power input, or anything.

Also, while looking for data on your big coil, I noticed you claim 75ft and
120ft sparks on your website. Have you ever actually produced these? As far
as I know, most of us are under the impression that the all-time world
record for a Tesla coil discharge is 39ft or 59ft or something like that.
(not sure which, maybe Terry knows) So if you have done it then you just
raised the bar a good deal for those of us who were hoping to beat it :(

Steve C.