It wouldn't surprise me if some tuning could help at this point,
but the breakout level depends so much on the sharpness
of the breakout metal spike, so it's hard to say. Late breakout
is certainly a good sign of good tuning along with large spark
length increase near the end of the variac's range.
I've never had good results tuning by tapping the primary
for some reason. I think it's because it tends to change
the coupling and the grid feed back. Too many things
interact. Therefore I always tune using capacitance
only. My primary has no tap point. I usually used a
fixed 23.5 turn primary on a 6" dia. form, about 1/8"
per turn of wire. That was with a 3" diameter secondary
coil.
John
-----Original Message-----
From: Chris Reeland <chrisreeland@xxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Wed, Feb 28, 2018 7:57 pm
Subject: Re: [TCML] VTTC MOT question
Hi Steve and John,
Hey John, what do you think?
I feel maybe breaking out a bit soon.
Still need some tuning changes somewhere?
Me, I am about usually about 40-45%.
I am using a aluminum thin wall tube with a sharp steel sheet metal screw
jammed in the end. Used to use just bare tube on less power full coils. But
at higher power levels gets oxidation erosion/vaporization of course.
Chris
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxxxxxx
https://www.pupman.com/mailman/listinfo/tesla