Re: Personal intro, 4,062 joule thumper, what to do with it (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Gerry Reynolds <greynolds@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Thu, 21 Dec 2006 20:01:07 -0600
From: David Rieben <drieben@xxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Cc: David Rieben <drieben@xxxxxxxxxxxxxxx>
Subject: Re: Personal intro, 4,062 joule thumper, what to do with it (fwd)

Hi Igor,


I don't really have much experience with exploding 
wires, but I do have a few shrunking quarters under my
belt ;^) With 4 kJ, you should be able to modestly shrink
quarters down to nickel size. You will definitely need a
sturdy steel containment vessel as blasting a small work coil
for coin shrinking with the energy of an assault rifle's muzzle
blast is obviously going to blow shrapnel of wire fragments 
everywhere! Definitely not something for the faint of heart! ;^()
I have shrunken quarters with up to 20 kJ blast and at this
kind of power, the quarter's diameter comes out considerably
smaller than a dime's, but also becomes fairly thick. Even
with most of the "explosion" confined inside the containment
vessel, the noise level is comparable to the discharge of a 
large caliber hand gun at point blank range! Be careful!

David Rieben


----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, December 21, 2006 5:03 PM
Subject: Personal intro, 4,062 joule thumper, what to do with it (fwd)


> Original poster: Gerry Reynolds <greynolds@xxxxxxxxxx>
> 
> 
> 
> ---------- Forwarded message ----------
> Date: Thu, 21 Dec 2006 13:33:58 -0600
> From: Igor Chudov <ichudov@xxxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Subject: Personal intro, 4,062 joule thumper, what to do with it
> 
> Recently a thumper followed me home. It is described here.
> 
> http://igor.chudov.com/projects/High-Voltage/Hell-Machine-THUMPER/
> 
> Associated Research cable fault locator mdl 8613 also known as
> "thumper". It is labeled HyJoule. Its purpose is to help locate
> insulation faults in high voltage buried cable, by inducing giant DC
> pulsed discharges that blast through faulty insulation. The lineman
> would walk along the buried cable path and feel the "thumps" with his
> feet.
> 
> The way it works is this. The first device is a DC source, it uses
> about 10A of 120 VAC as supply and produces up to 25 kV DC as
> output. For safety when NOT in operation, when high voltage is
> switched off, high voltage side is grounded by a contactor. The second
> device is comprised of a high voltage capacitor, and a special high
> voltage contactor to produce periodic discharges. There is also high
> voltage cable that is supposed to be connected to the cable being
> tested. I would guesstimate the size of it as 7/8" in diameter and 50
> feet in length.
> 
> With voltage up to 25 kV, and capacitance of 13 uF, my thumper is
> designed to deliver up to 4,062 joules, or approximately the energy
> carried by bullets from a burst of assault rifle fire. 
> 
> With generous prodding from Bert, I got it to work. 
> 
> Now the question is what can I do with it.
> 
> My immediate plans are to a) try to shrink coins and b) try to make
> lightnings by burning up thin wire and hoping that the exploding wire
> is hot enough to ionize air to carry the bulk of the discharge. 
> 
> If so, I would like to hear some relevant experiences. 
> 
> Specifically is blowing up copper wire for lightning a long term
> health hazard (I am afraid so, and thus want to explode steel wire). 
> 
> As for coin shrinking, I want to build a sturdy steel box for
> containing explosions.
> 
> i
> 
>