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RE: [TCML] Big Insulators
Hey Jim.
I don't know what the availability is with 12" pipe, but I use a closet
flange to attach my secondaries to the base. The secondaries slide right
over the flange connection and as long as you don't push them down too
tight the secondary remains detachable from it.
The flange usually has 4 bolt holes Might be some other type of drain
that comes in that size that will work.
As far as making the coupling adjustable, you could use a slightly
smaller pipe on the inside of the secondary for it to slide on. The
smaller pipe could extend down through the table to your base...you
could just fasten it with L brackets at the bottom. Then you could drill
a reference hole towards the bottom of the secondary, and then drill
holes every 1/2" or so along the adjustment length of the inner pipe
and use plastic screws to adjust the height.
??
Good luck with your project!
Shannon Weinhold
-----Original Message-----
From: Jim Mora [mailto:wavetuner@xxxxxxxxx]
Sent: Sunday, November 22, 2009 2:19 PM
To: 'Tesla Coil Mailing List'
Subject: [TCML] Big Insulators
Hello All,
A hearty thanks goes out to John Forcina for providing me with some
truly awesome insulators. The top cap is just shy of 4" in diameter so a
sewer pipe will be cut and glued to the inside of an end cap which will
be lag bolted into my round, Formica school table top. Four will make
perfect HV legs by simply setting down the table top on them! - Pictures
to follow. I want this 12" to be easy to set up, tear down.
I haven't figured out how to mount the secondary yet; but, I was
thinking, since I have extra length of the .125" wall PVC former (=Light
+ 20lbs of
#18 magnet wire) of extending the secondary through a hole in the table
top for stability and coupling adjustments. The top load should be light
as it is 12" dryer duct ~ 52" round. The coil will be a 5:1 ratio with
.375 copper tubing as the primary, an ASRG, and a .1uf General Atomics
new, high rep rate cap.
The control cabinet tames a 14400v dry transformer in a separate
transformer cabinet.
Any ideas on the secondary mounting would be welcome! I have yet to find
a way that I like with my smaller coils without fussing around; and, I
want to know what I am going to do before I cut the former.
Thanks John - perfect legs!
Jim Mora
This hobby keeps me $ broke;-^)
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