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UK twin coil spark length record
Original poster: FutureT@xxxxxxx
I received this e-mail from Martin Dale of the UK. I thought US coilers
might enjoy reading about his results with his twin coil at his recent
UK Teslathon. I pasted his email below. I don't think Martin is
on this pupman.com list, so please send any comments directly to his email
Of course you can comment on this pupman.com list in addition
if you so choose.
In a message dated 6/3/06 11:00:26 PM Eastern Daylight Time,
I promised to report back to you about my UK spark record attempt
earlier this year...
Well the factory unit I intended to use in January turned out to be
unsuitable, so I had to wait until my Teslathon last weekend to run
and test my new twin coil.
I'm pleased to say it was a success! I managed to strike out to 12
feet of arc!
Derek's site, (click on 'EE at Teslathons') has some good pictures
of the 9th UK
Teslathon at Derby, England.
I used some 24" spun toroids made by Finn Hammer of Denmark, and a
new design of break-out I made that really helped with directing the arc.
The Teslathon was held at a church hall, which we have been using
for a good few years now. The church elders have got used to our
crazy stuff :-)
I used a 5kVA pig and a 140nF cap for the 12 foot run at about at
about 8.5kW input power. As you can see from Derek's pictures, I
burnt my gap up pretty good!
Still, it was only the first outing for this twin coil, and I'm
already working on beefing up the gap with air blast cooling.
I'm sure I can get more out the system with bigger toroids, more
caps, and some careful tuning.
The tuning was incredibly sharp on the day. I was moving the primary
clips just a few inches at a time and seeing big changes in performance.
I wonder if other twin coilers experienced the same with their twin coils?
Please let other coilers stateside know of our antics over here!
Kind Regards, Martin Nottingham, England