1/4 Wave Theories - do a test?

From:  Greg Leyh [SMTP:lod-at-pacbell-dot-net]
Sent:  Wednesday, June 03, 1998 2:39 PM
To:  Tesla List
Subject:  Re: 1/4 Wave Theories - do a test?

Mad Coiler wrote:

> Measure the maximum spark length produced by your 1/4 wave
> Tesla Coil.  Then put a larger toroid on it that brings the frequency
> below that of when it was equal to the 1/4 wavelength. See if spark
> length increases. 
> I have tried this. I have a small 3.5" diameter secondary
> that has 500' of wire in it.  Running it at around 400kHz (1/4 wave
> equals 616') it has almost double the spark length and several times the
> power as when I run at the 1/4 wave frequency. And yes, the coil was
> fully retuned for all experiments.

Many experimenters have noted this in the past, confirming that
there is very little empirical correlation between a coil's 
'1/4 waveness' and its performance.