Re: Another trial: Strange results again...

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Luc by way of Terry Fritz <twftesla-at-uswest-dot-net>" <ludev-at-videotron.ca>

Hi Simon

What is the space between your gap and how many turn do you have on your
secondary ?

Luc Benard

Tesla list wrote:

> Original poster: "Simon Yorkston by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <Quantum-X-at-Qserve.8m-dot-com>
>
> Hi List.
> I fired up the coil last night [finally managed to grab some dry-land and
> some free time..].
> As per Terry's advice, my coil specs are pretty much the same as before,
> but with the following changes:
> Filter: now has 20 .0047ufd caps [not .047 :P] - 10 per leg, with 2x3k 11W
> resistors per leg.
> MMC now consists of 3x15of .047 caps.
>
> It seems to run ok, but I'm still getting pretty poor results.
> The maximum 'fat' sparks that I could get were about 25 cm from the toroid
> to an earthed rod, and this wasn't consistant. It seemed that the coil was
> 'inconsistant' with its tuning.. I could tap to one place, and then change
> back to it later, and get different results from the first time. It think
> this may have something to do with the way my toroid is attatched and
> connected - the sparks were preferring to come off the wire connecting than
> the toroid, unless 'forced' [eg, grounded rod put to opposite side] - Does
> anyone have any simple, yet effective ways of attatching the toroid?
>
> I did get a quick treat though - For a short time [5-10 seconds] I
> witnessed the sparks 'sliding', and seeing the repeat images of the same
> spark - very nice.
>
> Around the fat sparks that I teased, there was a thick purple glow- about
> 15cm tall.. I'm wondering if this is just a really quick breakrate, or
> something..
>
> Well, I was really hoping someone could tell me what's wrong with my coil
> :)
> I have rebuilt everypart of the coil, at least one over, and everything
> seems to checkout now... The only idea I have is the sparkgap- Could it be
> breakingout to fast; but if I add more points, will it just make the
> safeties fire?
>
> Thanks,
> Safe coiling..
> Simon