Re: First THOR measurement results

["Luc" <ludev-at-xxxxxxxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

Hi Garry

The decreased performance of your coil by heating the plate cap is probably
cause by dilatation of the dielectric causing decreased capacity and going out
of tune.

Luc Benard

Tesla list wrote:

> Original poster: "Garry Freemyer" <Garry-at-NDFC-dot-com>
>
> << The performance of Thor (spark length) decreases quite rapidly within
> 15-30
>  seconds. This is expecially noticeable without the copper rod placed on the
>  toroid: then streamers are quite rare and stop coming within 10-15 seconds.
>  What
>  might be the reason? I suppose the RSG overheating and crippling the
> quenching
>  or what? I have already heard of this kind of behaviour but I can't recall
> what
>  was the explanation. Anybody?
>   >>
>
> I had the same experience with my latest coils when the caps got warm. I was
> even able to demonstrate decreased performance by warming up the caps in the
> back of the car in the sun and the performance was dismal even tho the spark
> gap was cool.
>
> I was using stacked plate caps at the time btw.