Re: Help with TC

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

Original poster: "James B by way of Terry Fritz <twftesla-at-qwest-dot-net>" <zebulan123-at-yahoo-dot-com>

U need a large top load and maybe less primary
capacitance. so u can increase your primary turns to
tap at a min of eight turns and in my experience
unless your coil is small even eight turns is to few
for good prformance. also I'm no expert but large
primary caps dont seem to deliver any better
performance than smaller ones,there is a limit here of
course but i use less capacitance and more primary
turns 10 to 12.
 James
--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Sean Taylor by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <taylorss-at-rose-hulman.edu>
> 
> Hi all,
> I have several TCs that I have been working on for
> quite a while, and
> it seems that I can never get arcs nearly as big as
> people have said
> on webpages, on the list, etc. for the same input
> power.
> 
> Currently, I am running a coil with two 9k60 NSTs in
> parallel, a PE
> homemade cap of 35 nF, 3/8 copper tubing for the
> primary, and 22 AWG
> wire for the secondary on a 4" PVC form, about 28"
> tall.  The primary
> is an inverted cone, about 30 degrees, and has about
> 10 turns (should
> be more?). It seems like I can only get it to run
> somewhat well if the
> primary is tapped all the way in at around 2 to 2
> 1/2 turns, and wont
> run well anywhere else.  I don't have an output
> terminal, and I know
> this would lower the operating frequency, and then I
> would have to tap
> it out farther.  Also, do the wire lengths from the
> cap to the primary
> make a huge difference? They are 10AWG, but are
> about 3 feet long
> almost, as my cap is in 4" PVC, a rolled type, so
> the terminals are
> fairly far away. I just bought 12 0.05uF -at- 10KVDC
> caps for a MMC. 
> Will this help a lot? I am using a RQSG, with 9
> sections, and a fan to
> quench the spark.  What else could be improved, or
> what more
> information is needed?
> 
> Thanks for any help anyone can provide.
> 
> Sean Taylor
> 
> 
>