Re: Large Pulse Capacitors for sale from The Geek Group (fwd)

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Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Wed, 25 Oct 2006 08:02:24 -0500
From: David Rieben <drieben@xxxxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Cc: David Rieben <drieben@xxxxxxxxxxxxxxx>
Subject: Re: Large Pulse Capacitors for sale from The Geek Group (fwd)

Chris,

So how much would each of these "quarter shrinker's dream"
caps cost a pupman list member? Are they all the same value
as the one stamped "7.4 uF, 50 kV, 9250 J"? Would there be
a discount for one that was left "unrestored"?

David Rieben


----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, October 24, 2006 10:54 PM
Subject: Large Pulse Capacitors for sale from The Geek Group (fwd)


Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Tue, 24 Oct 2006 22:44:19 -0400
From: Chris Boden <cboden@xxxxxxxxxxxxxxxx>
To: 'Tesla list' <tesla@xxxxxxxxxx>
Subject: Large Pulse Capacitors for sale from The Geek Group

We recently acquired 117 *large* Pulse capacitors for use in several
upcoming demonstration projects. However, I only require about 50 or so.
Because of their substantial size and worth, we have opted to sell our
surplus to the membership and Pupman, and possibly make some available to
the public.

Let me put this in perspective. We're not talking about MMC caps, or caps
that most of you are used to where you can hold a dozen of them in your
hand.

We're talking about...

http://www.thegeekgroup.org/archives/img/albums/uploads/2006-10-12/DSC04496.jpg

*REALLY* serious Death-In-A-Can kind of capacitors.

Each one of these could adequately be described as a "Tiny God"(tm).

Each one of these requires a drain wire at all times. Energies stored in
these are WELL past "Lethal" and could accurately be described as
"Atomizing" (meaning they will clean your ass up with a sponge). These are
NOT toys and make a pole pig look like a bug zapper by comparison.

We are NOT selling these caps to....

Anyone under age 18 without a letter from AND PHYSICALLY MEETING their
parents.

Anyone who still lives with their parents without parental consent (signed
letter and phone verification).

Anyone who wants to use them for any manner of stupidity (to be judged by
Group executive staff) such stupidity includes but is not limited to Weapons
of any manner, or attempting to launch the neighbors cat into Low Earth
Orbit.

Anyone who could be described as "Twitchy" is also right out.

We do realize that anyone who WOULD want to buy one of these is likely a
little bit odd to begin with. So we're taking that into consideration.

All proceeds will go to The Geek Group and be used to pay our recurring
expenses (lights, heat, insurance, government official bribes, etc).

These caps were donated to us several (5?) years ago and are in horrible
cosmetic condition. Labels scratched up, paint is rusting (some weren't
painted and sport a layer of surface rust), some dents, etc. Most date to
70's-80's vintage.

We are taking the time to properly prep each cap, one at a time (it takes a
full day to do 2 caps). Each cap is sanded to remove all the rust (sometimes
removing all the old paint as well, we usually just go down to bare steel).
Then coated with a layer of Krylon primer to protect the metal. We even
paint the bottom. In the event we have to remove the original labels (some
aren't stickers but actually screen-printed onto the cap) we are taking the
time to permanently stamp the important data into the Ground Terminal Ring
of the cap itself. We make sure to stamp Voltage and uF rating, as well as
Joules (where the labels state it). Each cap is also stamped with a Geek
Group number (for our internal tracking).


Here's what they look like after the stamping and an overhaul.

http://www.thegeekgroup.org/archives/img/albums/uploads/2006-10-14/DSC04671.jpg

http://www.thegeekgroup.org/archives/img/albums/uploads/2006-10-14/DSC04666.jpg

Nice pretty primer, they should last another decade with proper care and
feeding.

If you're curious about the internal construction, well, so were we. After
the careful, precision application of delicate tools such as a Forklift,
Sawzall, Claw hammer, and a 1-Meter Crowbar we got a good look inside.

http://www.thegeekgroup.org/archives/img/albums/uploads/2006-10-16/DSC04813.jpg

You can cut the entire case, all the way around, and it'll still hang with
only the massive internal connections supporting the entire weight of the
cap. Note the cap is actually suspended an inch off the floor in the above
pic. And no making fun of my pretty pink hat. I'm so in touch with my
feminine side there's a lawsuit pending.

http://www.thegeekgroup.org/archives/img/albums/uploads/2006-10-16/DSC04861.jpg
Here's the crème filling. They're made of a set of *big* caps all connected
in parallel. Each one of these weighs more then my laptop.



Chris Böden
President
The Geek Group / Applied Intellect
www.thegeekgroup.org
Because the Geek shall inherit the Earth!