Re: [TCML] Stuck at 36"

[futuret@xxxxxxx]

Bill,

Welcome to the list.

Usually spark lengths are measured to the side of the toroid, going
outward horizontally from the toroid.  Of course the heat of the
sparks do tend to make them rise to some degree.

Although keeping the spark gap narrow protects the transformers
from destruction, it also limits the length of the output sparks.

> From a power input and toroid size viewpoint, you could get
54" to 62" sparks depending on various factors.

   http://futuret.110mb.com

John
--


-----Original Message-----
From: b.jbohn@xxxxxxxxxxx
To: A <Tesla@xxxxxxxxxx>
Sent: Sat, 10 Jan 2009 6:39 pm
Subject: [TCML] Stuck at 36"



Hello everyone, first time here (great site!).  I've built a coil that 
refuses
to put a streamer past 36" to a grounded plate suspended vertically at 
the top
of the secondary.  Occassionally I'll get one 41-42".

I'm using NST's 1@60Ma 7.5kv 4@30Ma 7.5kv all hooked together.  I think 
they're
all okay because if I remove any one of them from the system 
performance
diminishes.

The secondary coil that I've had the best luck with is wound on a 
5-1/4"
varnished paper tube winding length 22-1/2" the wire is .014 or #27 
magnet it's
1,607 turns 2,208 feet.

My capacitors are a mixed batch of homemade HDPE plate type.

Caps #1 & 2 each contain aluminum plates 10 x 12" 16 plates each .090 
HDPE
between each plate

Caps #3 & 4 each contain aluminum plates 4-1/2 x 9" 40 plates each .060 
HDPE
between each plate

Cap #5 rolled type in oil .01583 MFD

All capacitors are in oil.

My spark gap is a segmented type with 10 copper tubes 7/8 OD 5" long 
total space
between gaps is .150" just enough so the transformers can break.
The gap is also blown with a fan.

My primary is a 1/4" copper tube conical 15 degree 14 turns 23" OD 
7-1/2" ID
seems best tapped at 12 to 13 turns.  I'm using a spun toroid it is 
4-1/2 x 18"
that size seems to work the best although if I put a 6" sphere on top 
pretty
cool stuff happens (the streamers jump around the toroid and ball).  I 
have
other secondaries that I've tried but this one is the best.  I have 
looked at
other coils on this listing and other websites and I think mine should 
be doing
better than 36".  Any input appreciated!

Bill
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