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RE: spark gap ?
>Original Poster: "chris.swinson" <chris.swinson-at-zetnet.co.uk>
>>Original Poster: Gary Lau <lau-at-hdecad.ENET.dec-dot-com>
>>>Original Poster: "chris.swinson" <chris.swinson-at-zetnet.co.uk>
>>>Hi all,
>>>
>>>My first coil used a single gap which was set to about 5mm. I later
changed
>>>to a multi gap, all gaps are 1mm appart using copper tubes ( RQ type). This
>>>improved my coil no end, It must have gave about 50% increase in output.
>>>
>>>What I want to know is, if I half the gaps to say, 1/2mm, and use twice as
>>>much tubes, will this increase power again ?
>>>
>>>
>>>All the beST,
>>>Chris.
>>Could you describe the airflow over your two gaps? This alone would account
>>for more than a 2:1 performance change to the same gap, going between no air
>>flow and enough airflow. It would seem that small multiple gaps fare better
>>with reduced airflow than for single gaps.
>>
>>Gary Lau
>>Waltham, MA USA
>Well, err, there is no air flow whatsoever . It runs for a fair few seconds
>and stops. You can here the frequnecy dropping as it gets "glogged".
>Haven't really given a lot of thought to it yet.
>
>At the moment I have 5 tubes set to about 1mm each, giving 5mm total gap. I
>was wondering if I hlafed the gap to 0.5mm and used 10 tubes if that would
>give me better output. I'm sure it will run better, but I'd like to know
>what other people think before I invest time in a new gap.
>
>chris.
I think you know the answer now. If you have no airflow, it's like
asking "Will a 4 or 8 cylinder engine deliver more HP, even though I
don't put oil in it?" If you are determined to not use airflow, Terry
Fritz has shown that gaps with a large number of very small spaces work
well. Gaps with 10 or fewer segments run TERRIBLY with no airflow, and
you should remember that airflow should be channeled THROUGH the gap arcs
as much as possible.
Regards, Gary Lau
Waltham, MA USA