RE: first light on coil

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Gary.Lau-at-compaq-dot-com>

Opening the gap won't significantly affect the tuning (except to a minor
degree if it results in longer streamers and secondary capacitance).  BUT -
the gap should only be set by sizing it such that with the gap across the
NST and the primary tap disconnected, the gap will _just_ begin to fire.
Opening it further will subject the NST and cap to voltages higher than
they may survive.

Gary Lau
MA, USA


my question is if i open the gap do i have to retune the primary?
many thanks to all who helped me achieve first light
colin heath