[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Does it Matter?

Original poster: Esondrmn@xxxxxxx 

Tyler,

My opinion, I would use # 26 wire for 1100 turns. Bigger wire, less resistance, and you still have over 1000 turns which should work just fine.

I have both of my coils set so the first turn on the secondary is just even or slightly above the top plane of the primary. If I lower the secondary any more, I get racing sparks. You want the tightest coupling that your design will allow. I would start there and experiment. I have found that lower powered coils will allow tighter coupling. Then as you add more power, you may have to back the coupling off a bit.

Ed Sonderman

In a message dated 12/20/04 6:53:07 PM Pacific Standard Time, tesla@xxxxxxxxxx writes:
Original poster: Tyler Pauly <rpggod714@xxxxxxxxx>

Hello,
  I have a coil in construction. Powered by 9kv,30ma
NST, copper pipe spark gap, 13.5 nF MMC (11) caps, and
primary of 12 turns of .25 OD copper tubing in flat
spiral. Two questions:

1. What would be best for my sec.: short fat(18x4 PVC)
coil with 28 AWG-it would be about 1400 turns- or
slightly taller and skinnier with 26 AWG about 1100
turns? I know that there are no set rules for best
results, but I'd just like your thoughts.

2. I read a post about arcing between primary and
secondary coils. This reminded me about a question:
Where do you put the secondary in relation to height
to the primary i.e. the secondary starts 2" below the
primary, it starts 1.75" above, etc. what does this
change? I'll only need to ask these questions once so
bear with me.

           Thanks for your patience,

                  Tyler