Re: [TCML] srsg to vari speed rsg

[jhowson4@xxxxxxxxxxx]

Sort of how I built my ASRG 
propeller style, I can remove electrodes easily, I can replace tungsten easily, 
and it uses a minimum amount of tungsten as well, cutting costs. Each stationary electrode only has .75" of 1/4. 
the rotary electrodes have 1.5" of 1/4" thoriated tungsten. 
Brass is expensive stuff, but all the brass was procured cheaply on ebay via some good deals over the course of a year or so. 

Designed to be a dual gap, for use in a split resonator power supply DC coil, hence the double sided nature. 
Still needs a few tweaks to be perfect for my tastes, but it does the job nicely currently on my test coil. 

check it out here 
http://s139.photobucket.com/user/JHowson/library/Tesla%20Coils/Experimental%20DC%20Tesla%20Coil%20%20%20code%20name%20TRON/4%20Rotary%20Spark%20Gap?sort=3&page=1 

note: the second rotary electrode is missing in the pictures. I have not installed it yet. 




Thanks, 
John "Jay" Howson IV 


"Why thank you, I will be happy to take those electrons off your hands." 

----- Original Message -----
From: "Scott Bogard" <sdbogard@xxxxxxxxx> 
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx> 
Sent: Sunday, July 28, 2013 1:46:10 PM 
Subject: Re: [TCML] srsg to vari speed rsg 

I was thinking more a propeller gap with unused stationary electrodes, that 
could be reconnected at will. You could always add top capacitance to 
cancel out the extra primary inductance when you cut your cap size, 
assuming you have the power draw to support a larger top load, not sure if 
that is applicable to your situation. But at any rate I love the ASRSG, I 
did sync once, and got poor results, switched to ASYNC and things worked 
much better. I know now what I did wrong, poorly sized cap and all, but I 
still won't go back, ASYNC is too easy to build, and smaller caps are 
cheaper, and I love the brightness only high BPS can afford. 

Scott Bogard. 


On Sun, Jul 28, 2013 at 2:42 AM, <coils@xxxxxxxxx> wrote: 

> Thanks for your thoughts Scott, I am using a 60:1 distribution 
> transformer with an adjustable (gapped) inductive ballast. 
> I am tapped out of primary inductance, so I cant really decrease my cap. 
> I have a lot of flexibility though with the ballast. Thinking 
> about the gap you suggest has me boggled, maybe something like Richard 
> Hulls series quench rsg with swithchable stationary electrodes? 
> What appeals to me, is that a vari speed gap can be adjusted on the fly, 
> no stopping and fiddling. That is why I made the Freu phase shifter. 
> 
> This has really got me thinking about rotary gaps! 
> 
> cheers 
> 
> 
> 
> On Sat 27/07/13 12:31 PM , Scott Bogard <sdbogard@xxxxxxxxx> wrote: 
> 
> > One thing you could do, is rig a system to do sync that has multiple 
> > dis-connectable electrodes for 120/240/480 BPS, but again, if you aren't 
> > changing the tank cap size, only one range will actually serve your 
> > purposes well... What type of transformer are you using? How is it 
> > ballasted if at all? 
> > 
> 
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