Re: [TCML] Spark gaps (again)

[futuret@xxxxxxx]

Jim, Dennis,

Interestingly when I compared a triggered single gap, to a
two-gap rotary, I got the same spark length in either case.
However the triggered gap produced a tremendous amount
of light and noise.  The rotary gave off little light or noise.
Apparently even with the tremendous light and noise from
the triggered gap, the losses were not much different than
with the rotary.  Both gaps ran at 120 bps, and were installed
into the same TC for comparison.  I had to set the gap spacing
at around 5/8" width, to insure that it would fire only when
triggered.  Apparently a wide spacing and a lot of light and
noise do not necessarily indicate high losses.  But multiple gaps seem
to have very high losses.  It may be the so-called cathode
voltage drops at each segment which are the culprit causing
the losses in the multiple gaps.

John
--


-----Original Message-----
From: Jim Mora <wavetuner@xxxxxxxxx>
To: 'Tesla Coil Mailing List' <tesla@xxxxxxxxxx>
Sent: Wed, 4 Mar 2009 9:44 pm
Subject: RE: [TCML] Spark gaps (again)



Hi Dennis,

Please stand corrected on the Gap construction. The multi-segment 
called a
Richard Quick design is a misnomer as it was invented by Richard Hull's
Group. Richard Quick did invent a single Hyperbaric gap which I have 
used
with great success with (2)15/60 neon transformers. Its way down in the
achieves and has gifs.

I have never been able to make a decent multi segment copper pipe gap 
with
several, sincere attemps. A single hyperbaric gap the air is adjusted to
quench the gap as near as possible to first transfer of energy into the
secondary rather than allowing sloshing back and forth which is a big 
loss
factor as in a poorly quenched multigap. I just disassembled my 
multigap for
the brass screws and noticed the gross arced out gap surfaces. Heat, 
light,
misalignment all add to energy loss. A single gap is easy to make, to 
clean,
and adjust. Your mileage may vary. It rocked for me!

Jim Mora




-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On 
Behalf
Of otmaskin5@xxxxxxx
Sent: Wednesday, March 04, 2009 5:53 PM
To: tesla@xxxxxxxxxx
Subject: [TCML] Spark gaps (again)

I've been following earlier discussions about higher losses associated 
with
multi-segmented?spark gaps (i.e., Richard Quick type) compared to 
a?single
gap.? It's clear that the experience of this group has been power 
losses are
significantly less with?a single gap style with adequate airflow.? But 
I'm
not sure I caught why that is.? What is the reason that a 0.27" single 
gap
loses less power than an 9-gap / 10 pipe RQ gap that has total gap size 
of
0.27"?? If total gap spacing is the same for both, why would one be more
lossy than the other?

One other question, has anyone experimented with a RQ style using only 2
parallel pipes for a single gap???If so, what were the results.? With 
good
air flow, it seems this set up?would be good for keeping the gap cool
considering airflow goes between, around and through the pipes.? And you
could make the pipes longer, say 4 to 5?inches for better heat sinking
ability.?

Sorry to take everyone back to an old topic, but I've been away for a
while.? Thanks, Dennis Hopkinton MA
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla

_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla

_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla