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Re: New Coil/First Run (15 1/4" dia)
Subject: Re: New Coil/First Run (15 1/4" dia)
Date: Mon, 28 Apr 1997 22:31:53 +0500
From: Jeremy Bair <pwac-at-flinet-dot-com>
Organization: PWAC
To: Tesla List <tesla-at-pupman-dot-com>
References:
1
Tesla List wrote:
>
> Subject: New Coil/First Run
> Date: Sun, 27 Apr 1997 07:23:56 -0500
> From: Chuck Curran <ccurran-at-execpc-dot-com>
> To: Tesla List <tesla-at-pupman-dot-com>
>
> Hello All:
> Last night I was finally able to set up and put power to my
> newest
> coil. This is the one with the 15 1/4" dia. secondary with a 56" long
> winding of #15 wire (motor magnet wire comes in 1/2 size steps and odd
> numbers too). The toroid is 10 1/2" x 56" and I attached a breakout
> bump during assembly. Well, things went O.K. at first. I did video
> tape it in order to slowly examine things later and that will help. As
> I ran up the autotransformer I was expecting to hear the spark gap and
> then with a bit more input voltage achieve breakout on the toroid. As
> soon as I heard the gap fire within a split second 6-8 foot sparks shot
> out of the breakout bump on the toroid. There was also quite a bit of
> light coming up from beneath the primary where I house the spark gap,
> more than I recall from when I ran just the one .025 CP cap. Oh, I
> better mention I had my new Plastic Capacitiors .05 and the older .025
> CP cap in parallel. The light had me watching since it really reflected
> off the bottom of the aluminum foil covered toroid. Well, within about
> 20 seconds I apparently popped the fuse on the circuit for the rotary
> motor and it started to wind down with an interesting display of how
> higher break rates promote better spark! I did use a tach to set the
> rotary at a break rate of 360 bps for this first run. Today I'll be
> checking out the details of the short run and then try again. I watched
> the video, in some sections frame by frame and I didn't see any clear
> evidence of any "unplanned" arcing. The light coming up from the vacuum
> and rotary gaps did however sort of mask things abit so it's really way
> too soon to know if the coupling and other items are O.K. or not. The
> few sparks that did occur were dramatically more intense with this
> bigger coil when compared to my 8" dia secondary coil from last year.
> The final resonant frequency turned out ot be 65 Khz on this new coil,
> just for information. I hope that within about one hour today I'll have
> things ready for another test run, even though rain is predicted, I'll
> at least get it ready for today or tomorrow!
>
> Chuck Curran
> Cedarburg, WI
Wow, sounds great! I'm wondering one thing, I hope you weren't looking
too deap into the bright spark light. Even with a small cap, this
brightness can be enough to blind! (Or at least make black spots that
stick for a few minutes).
You know anyone with a video importer that could grab the video and post
it somewhere in a format we can all enjoy? 6-8' sparks. Awsome to say
the least.
--
_________________________________________________________________________
|Jeremy Bair IRC:DeadBatry
|Email: mailto:pwac-at-flinet-dot-com mailto:deadbatry-at-cycat-dot-com or hotmail-dot-com
|Web page: http://www.flinet-dot-com/~pwac
|Phone: 561-585-4165
|
|
Date: Mon, 28 Apr 1997 22:31:53 +0500
From: Jeremy Bair <pwac-at-flinet-dot-com>
Organization: PWAC
To: Tesla List <tesla-at-pupman-dot-com>
References:
1
Tesla List wrote:
>
> Subject: New Coil/First Run
> Date: Sun, 27 Apr 1997 07:23:56 -0500
> From: Chuck Curran <ccurran-at-execpc-dot-com>
> To: Tesla List <tesla-at-pupman-dot-com>
>
> Hello All:
> Last night I was finally able to set up and put power to my
> newest
> coil. This is the one with the 15 1/4" dia. secondary with a 56" long
> winding of #15 wire (motor magnet wire comes in 1/2 size steps and odd
> numbers too). The toroid is 10 1/2" x 56" and I attached a breakout
> bump during assembly. Well, things went O.K. at first. I did video
> tape it in order to slowly examine things later and that will help. As
> I ran up the autotransformer I was expecting to hear the spark gap and
> then with a bit more input voltage achieve breakout on the toroid. As
> soon as I heard the gap fire within a split second 6-8 foot sparks shot
> out of the breakout bump on the toroid. There was also quite a bit of
> light coming up from beneath the primary where I house the spark gap,
> more than I recall from when I ran just the one .025 CP cap. Oh, I
> better mention I had my new Plastic Capacitiors .05 and the older .025
> CP cap in parallel. The light had me watching since it really reflected
> off the bottom of the aluminum foil covered toroid. Well, within about
> 20 seconds I apparently popped the fuse on the circuit for the rotary
> motor and it started to wind down with an interesting display of how
> higher break rates promote better spark! I did use a tach to set the
> rotary at a break rate of 360 bps for this first run. Today I'll be
> checking out the details of the short run and then try again. I watched
> the video, in some sections frame by frame and I didn't see any clear
> evidence of any "unplanned" arcing. The light coming up from the vacuum
> and rotary gaps did however sort of mask things abit so it's really way
> too soon to know if the coupling and other items are O.K. or not. The
> few sparks that did occur were dramatically more intense with this
> bigger coil when compared to my 8" dia secondary coil from last year.
> The final resonant frequency turned out ot be 65 Khz on this new coil,
> just for information. I hope that within about one hour today I'll have
> things ready for another test run, even though rain is predicted, I'll
> at least get it ready for today or tomorrow!
>
> Chuck Curran
> Cedarburg, WI
Wow, sounds great! I'm wondering one thing, I hope you weren't looking
too deap into the bright spark light. Even with a small cap, this
brightness can be enough to blind! (Or at least make black spots that
stick for a few minutes).
You know anyone with a video importer that could grab the video and post
it somewhere in a format we can all enjoy? 6-8' sparks. Awsome to say
the least.
--
_________________________________________________________________________
|Jeremy Bair IRC:DeadBatry
|Email: mailto:pwac-at-flinet-dot-com mailto:deadbatry-at-cycat-dot-com or hotmail-dot-com
|Web page: http://www.flinet-dot-com/~pwac
|Phone: 561-585-4165
|
|