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Secondary runners



Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Robynsaddiction-at-aol-dot-com>

Hi List, 

      What besides cupping can cause arcs to race down my secondary. It is
happening with one of my smaller coils (1.75 inch by 10 inch winding length).
The coil form is acrylic tube, and the bottom turn of the secondary is even
with the bottom turn of primary. The primary is a 30 degree cone type primary,
with 9 total turns at .5 inches apart. Torrid is 3 inch by 8 inches OD, and my
capacitors are TDK UHV series Strontium Titanate pulse rated capacitors. The
cap bank is right at .01uF, and that is perfect for my 9/30. All I can seem to
get out of the coil is 12 inch arcs, and with those I get runners. Perhaps it
is because of my single static non-quenched gap that I am using until I have
time to make a better one. What do you think?