Re: Rotary gap flame-around

            Re: Rotary gap flame-around
            Thu, 3 Apr 1997 08:13:54 +1200
            "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz>
            Wellington Polytechnic, NZ

              I'd suggest that flame-around can be eliminated when a 
suitable k is used based on recent results reported to the list (Y-N)?
Personally I'm all in favour of using much higher inductances in the 
primary than traditional wisdom has suggested for a swag of reasons.


>   From: 
>         "DR.RESONANCE" <DR.RESONANCE-at-next-wave-dot-net>
>     To: 
>         "Tesla List" <tesla-at-pupman-dot-com>
> For what it's worth:
> We have never experienced rotary gap flame around and we always run a
> 1/2
> in. dia. rotary electrode with a 1" dia. fixed electrode at 1725 and
> 3450
> RPM.  
> We only noticed this on one occasion when we used a lot of inductance
> and a
> rather small value of capacitance (ie, 10-12 turns on pri. with .025 MFD
> cap).  We usually run 3 1/2 to 4 1/2 turns inductance and add cap
> necessary
> to bring everything into tune.  
> The RSG has 4 actual sparkgaps -- 2 on each side of the rotating wheel
> (usually 12 in. dia).
> A lot of experimenters are using more inductance and less cap and I do
> understand it is easier on the caps.  This could be the cause of the
> reported flame around problems.
> DR.RESONANCE-at-next-wave-dot-net