Re: [TCML] RSG disks - who can make them ?

["resonance" <resonance@xxxxxxxxxxxx>]

A great idea is to support your rotor on "pillow blocks" which allow you to 
use different dia pulleys on the drive belt to experiment with different 
speeds.  I find around 400 - 500 pps works great with pole xmfrs.  Higher 
pps work too but the spark are not as fat and thick even with a large pole 
xmfr providing 800 mA to 1200 mA drive at 14.4 kV.

Dr. Resonance

Resonance Research Corp.
www.resonanceresearch.com


----- Original Message ----- 
From: "Lau, Gary" <Gary.Lau@xxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Wednesday, November 21, 2007 8:16 AM
Subject: RE: [TCML] RSG disks - who can make them ?


Hi Chris:

> I do not think anyone has really experimented with break rates/dwell 
> times.

I strongly disagree.  People who use asynchronous RSG's experiment with 
various break rates all the time, by simply varying the motor RPM.  Higher 
break rates tend to give hotter, brighter streamers (assuming that the power 
supply can charge the cap fast enough) simply by delivering more power to 
the streamers.  If the RPM is too low, the dwell time is extended and it's 
possible to achieve multiple, smaller bangs per presentation - an 
undesirable thing.  As has been previously stated, attempting to accelerate 
quench by reducing dwell times by increasing RPM is futile, as the spark 
will stretch following presentation until the gap voltage or current is 
insufficient, and the gap is good and ready to quench.

> Can anyone make (for me) a 24" RSG disc

I'll not try to discourage you too much, as much can be learned even by 
performing failed experiments.  I've also made some large and silly failed 
attempts at an SRSG, and am wiser for doing so.  Please be aware that such a 
large disk at high speeds has tremendous potential to cause injury, 
particularly if made of wood!

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Chris Swinson
> Sent: Wednesday, November 21, 2007 9:19 AM
> To: Tesla Coil Mailing List
> Subject: [TCML] RSG disks - who can make them ?
>
> Hi all,
>
> Can anyone make (for me) a 24" RSG disc and drill a range of holes for my
> next range of experiments ? My engineering skills are very poor
> unfortunately , so wonder if anyone has the technology out there to make
> once accurately or know an engineering firm who could make one...
>
> I was also thinking of a small disk with like a cross section of wood such
> as...
>
>     |
> --O--
>     |
>
>
> ( if the ACSII art comes out right)
>
> So I can have holes in the strips to alter the break rate of the 
> electrodes.
> It could even be made larger but I think balancing is going to be a right
> pain at 3000RPM!
>
> I know most will think it is a waste of time, though I do not think anyone
> has really experimented with break rates/dwell times. I would however like
> to conduct my own testing and document the results for the list...
>
> Cheers,
> Chris

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