Re: [TCML] 5" Sparks - Approx 35 watts input power: Tesla was correct!

[FutureT@xxxxxxx]

Bart, Gary,
 
Well now that you mention that, do you happen to remember
what the results were for the best small coils in Gary's small coil  contest?
I don't remember if those coil's performances met my formula or not.  
Maybe Gary can give some info here.
 
When I built my TT-32 coil, it only gave 27" sparks instead of the
32" I expected.  It was built very similar to the TT-42 coil, but was 
smaller and used less power.  The results were below what my
formula would expect.  It's possible there were higher losses in
the particular transformer I used, or something similar.  I  didn't
really look into that.  Maybe it wasn't really missing the mark
by a full 5".  Maybe it only missed by 2" or so.  I've have to  check
my notes.  This happens to be one of the things which is clearly
annotated in my notes ( I think ).  The operating voltage was  lower,
and that may contribute to under-performance.  So yes,
there is hope for the small coils, that they may properly  obey the formula,
if they are built carefully enough.   
 
Cheers,
John
 
 
In a message dated 3/12/2008 8:56:44 P.M. US Eastern Standard Time,  
bartb@xxxxxxxxxxxxxxxx writes:

FutureT@xxxxxxx wrote:
>  
>> However small coils  seem to give  shorter
>> sparks than the formula suggests, so  perhaps the spark would be about 
>> 6" or 7"  long.
>   
>As of 1 week ago I would agree, but I know  someone who has claimed to 
>build a very small coil that is getting  really good spark lengths (the 
>JF formula is working for him). I'm  awaiting his data. It should be 
>pretty interesting to compare his coil  to the typical small coil. Maybe 
>am troubled about small coils  performance and am hoping something 
>obvious shows.

>Take  care,
>Bart







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