RE: MMC question

> My other question is this.
> I am running a 4" coil with 16 (30 degrees incline) turns of 3.5mm Iron?
> fencing wire for the primary.
> My spark gap consists of up to 10 X 0.5mm gaps.
> I'm using 3 15Kv 30mA NSTs and am only getting 12" discharges.
> My cap is a 20nF (about) rolled PE type.
> I've raised the secondary to reduce coupling but to no avail.
> Does anyone have any suggestions??
Yep. Scrap the iron wire. Replace with Copper wire or copper tubing.
Even aluminum. I am willing to wager that your primary gets very warm
after a short run. Much losses in the iron.