* Original msg to: Esondrmn-at-aol-dot-com

Quoting Ed Sonderman:

 ES> I have my spacers made to raise the secondary and will try   
 ES> it this weekend. I will try 4.0" first.

That should definately relieve the pressure some, if not cure it
altogether. You might try both tapping the primary out, and
raising the secondary, if over-coupling is still a problem.

 ES> If I raised it up a foot, I would expect weak discharges and 
 ES> no visible corona.  

Yes, though you might see a bit of corona as the field flux
contracts and only couples in the bottom third of the secondary

 ES> As I move it closer - what happens?  I would expect to find  
 ES> a point where the discharges are maximum and the corona is   
 ES> still minimal - correct? 

Correct. When you achieve the maximum spark and the minimum
corona, you are "critically coupled".

 ES> And as I move it closer still, I will get more intense       
 ES> corona and shorter discharges?

Yes. As you overcouple the corona loss increases, splitting of
the secondary increases, and spark lengths decrease.

ES Just wondering, I don't have any experience with this.

Sounds as if by the time you read this you will have some pretty
decent experience. Experimentation is the best way to progress.

Richard Quick

... If all else fails... Throw another megavolt across it!
___ Blue Wave/QWK v2.12