Re: Secondary Constructio

> I have found that the sparks tend to travel along a solid surface
> easier than through the air. For some reason they will break down
> across the solid inside surface more readily than along the coil
> itself. Maybe with continued use the discharges lower the
> breakover voltage of the PVC surface. I know that after operation
> where theres a corona the plastic becomes marked with micro
> tracks. All the coils I've made have had uncapped ends also.
	This also could explain what you're seeing, coupled with whatever 
is happening in the center of the secondary. I had a go at explaining it. 
Check the other message that I put out on this and see what you think.