Re: [TCML] Strike rail hits and loud bangs - video uploaded

["DC Cox" <resonance@xxxxxxxxxxxx>]

The loud bangs across the Terry filter are caused by the main cap's energy
firing across a very low inductance load instead of going thru the primary
where the
energy is coupled into the sec coil.  This, from a mechanical standpoint, is
like putting your auto in neutral and then depressing the gas pedel to the
floor.  Lots of
energy going nowhere and is extremely hard on the caps.

You may consider tuning for more inductance to aleviate the problem.

Dr. Resonance




On Tue, Sep 30, 2008 at 9:15 PM, Stephen J. Hobley <shobley@xxxxxxxxxx>wrote:

> http://www.youtube.com/watch?v=GO9_vc49ZcU
>
> You can see/hear the "bang" at the end of the run.
>
> Is this a primary coil strike?
> How can we fix this?
>
> Steve
>
> ________________________________
>
> From: Stephen J. Hobley
> Sent: Tue 9/30/2008 9:37 PM
> To: Tesla Coil Mailing List
> Subject: Strike rail hits and loud bangs
>
>
> We have a fairly simple coil using a 60ma NST. Recently I changed the tap
> point on the primary and by chance hit a really sweet spot.
>
> Usually the Tesla Tuner is pretty accurate and gives good results, but in
> this case it did not indicate that this tap point was a good one.
>
> The streamer length has increased by at least 50% - but we did notice some
> rather worrying "bangs" from the Terry filter spark gap when the strike rail
> is being hit. Is this normal?
>
> Is it possible to tune a Tesla coil into a self-destructive state?
>
> I would take some pictures, but the darned thing scares me to death...
> :-)
>
> Steve
>
>
>
> _______________________________________________
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> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
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