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Re: Need Help With School Project

Original poster: "Dr. Resonance" <resonance@xxxxxxxxxx>



Sand inside and outside of PVC tube.  Seal with Glyptal (elec. motor shop)
2-3 coats let each drying overnight.  With a 4.5:1 height to dia. ratio your
3.25 OD tube works out to a winding length of 15 inches.  Wind with #28 or
#30 (best) enameled magnet wire.  After winding seal with orange shellac.
4-5 coats.

Use a scrap wire pri of 26-30 turns to check the complete range of tuning.
Start at 2 turns and work tap outward until you hit the first resonance ---
lowest is best.

Dr. Resonance




From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, March 08, 2005 10:34 PM
Subject: Need Help With School Project


Original poster: "M Duce" <mduce@xxxxxxx>

First of all I would like to thank all those that replied to me last time I
needed help.

I have now collected the following items:
NST - 12,000 V     30 MA
White PVC Pipe - 3.25 inches
Enameled Copper Wire - 24 AWG
Soft Copper Tubing - .25 inch diameter
Aluminum Dryer Vent Duct - 3 and 5 inch
2 Large Aluminum Pie Pans
Variac - 120 V    8 A - if of any use

My dad is helping me with any mechanical help, if I need it. I think that
now I am at the stage where we must wind the coil onto the PVC pipe for the
secondary coil. I am worried about the wire staying on the pipe. Should it
have lacquer applied to it? If so, what kind of lacquer or would it cause
the coil to arc across the windings. I was figuring a variable electric
drill to spin it. Does this seem good? We are thinking about doing about
900 turns of the wire. Does this sound alright?

Is my 30 MA NST powerful enough for this size of coil? I think I get my
hands on a 60 MA NST cheaply if necessary.

For my spark gap I am not really sure what to do. I am not sure weather to
use the rotary or stationary spark gap. Where would I find the plans for a
simple one?

I am thinking about using a beer bottle capacitor. My dad has already
agreed to empty the bottles of Corona. []

Would be grateful for any help or advice,
Mitchell