Re: [TCML] Spark gap

[hallam <hallam@xxxxxxx>]

Hi Scott,
I absolutely don't have any data supporting that claim.  It's really just
"received wisdom" :)

One of the problems with the classic RQ gap is that unless it's baffled
correctly, most of the airflow goes through the copper pipes and through the
large central gap, with relatively little going through the tight space 
between
the pipes.  This is just fine for cooling but not so great for air-blast style
quenching.  Though of course, cooling does help with quenching.

Henry

Quoting huil888 <huil888@xxxxxxxxxxxx>:

> Henry -
>
> This sounds plausible, but do you have any actual data (scope 
> waveforms, etc) that would support the claim of better quenching  
> from a  "propeller gap" vs a conventional static spark gap?
>
> The data would have to be generated from a test setup where the only 
> variable was the substitution of the two different types of gaps.
>
> If you have data, could you share it with the List?
>
> Regards,
> Scott Hanson
>
>
> ----- Original Message ----- From: "Henry Hallam" <hallam@xxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Thursday, February 21, 2008 9:42 PM
> Subject: Re: [TCML] Spark gap
>
>
> > Among other things, the propeller gap is better at quenching 
> > (shutting off the spark), especially at high power.
> >
> > Henry
> >
> >
> > Rich Schmuke wrote:
> > > I am going to ask a simple question but please give a simple answer. I am
> > > not a EE just a builder. I was asking about a rotor gap the other 
> > > day and it
> > > was suggested I try a propeller gap for my 200ma coil. Well I have a motor
> > > from a 8" hard drive now and am going to build a mount as soon as 
> > > it is warm
> > > enough to get to my shed. My question is why is a propeller at 3600 RPM
> > > better than a RQ copper tube gap?  60 cycle RQ  vs a 3600RPM it's the same
> > > break rate I think.
> > >
> > >
> > > Rich
> > >
> > > _______________________________________________
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> > > Tesla@xxxxxxxxxxxxxx
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> >
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>
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