Re: Alterations worth doing?

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

Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net> 

Hi Tom,

Add some reasonable gauge wire to your existing primary to allow tuning.
Use some tape to keep them from shorting for a quick experiment.

Since you are running at 50 Hz,  you may want to shoot for 100 BPS.  Here in
60 Hz land, many shoot for 120 BPS.

Gerry R.

 > Original poster: "Tom Luttrell PWRCOM" <tom-at-pwrcom-dot-com.au>
 >
 > Unfortunately I don't think I'll have enough primary turns available to
 > try the new secondary without adding the LTR primary cap (but I will
 > give it a go).
 >
 > According to JAVATC there were ~170 bps, is that high?
 >
 > Thanks for the comments.
 >
 > Tom.
 >
 >  > Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>
 >  >
 >  > Hi Tom,
 >  >
 >  > Your first design with 22nf was a resonant design (Cres = 23
 >  > nf).  The BPS
 >  > must have been very high.  With your second design, the Cp of
 >  > 35 nf will be
 >  > very close to 1.6*Cres (37 nf) which should be a good choice
 >  > for a static
 >  > gap.  You are however making two changes, so the difference
 >  > between the two
 >  > coils will be harder to see.  You might try the new coil with
 >  > the original
 >  > 22nf first leaving the spark gap setting at your original setting.
 >  >
 >  > Gerry R.
 >
 >