Re: Thoughts on new bigg coil

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


PVC is a poor choice for a high power coil.  It might track and destroy your
sec.

Dr. Resonance

 >
 >    Looking for some insight for a new modified Bigggcoil secondary.  As
now
 > the secondary is 108" x 24" wound with #14  thhn wire.  It sustained
damage
 > this winter and the winding has sags in it.  My idea while waiting for a
 > new secondary form is winding the same number of turns of the #14 wire
onto
 > a 11" outside dia PVC form.  Yes thats 108" x 11", quite a stick.
 >    But how do you think it will perform all else being the same?  Same
 > turns, just lower inductance/higher freq.   The old secondary made 26.5
 > foot sparks, 21 kVAC input voltage, 120 BPS sync rotory, 0.173 uF cap.  Of
 > coarse the primary will be modified & retuned as reqired.  This it just
 > temporary untill the new 108 x 24
 > form is made.  The old secondary was 90 mH, the new one will be 19 mH
 > approx.  Same 8' toroid also to be used.   Thoughts?
 >
 > Kevin E
 > Coiling in Oklahoma
 >
 >
 >