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RE: [PSUBS-MAILIST] UEM Marketing Research Time

Personally, I'd be unlikely to buy a sailing sub. I have nothing but the
utmost respect for Kittredge, yet at the same time I find it hard to imagine
any sub could really sail in a satisfactory manner. I'm a windsurfer sailor.

A human powered sub sounds more marketable than a sailing sub, especially in
the context of the well publicised human powered sub races. However I see it
more as a shallow water proposition. Are there really that many places where
one can pedal out to a depth of 250 feet? And this sub probably weighs and
costs 90% of what its powered equivalent would. I'd say a human powered,
fiberglass, wet sub with SCUBA divers as the target market might be the
thing. Pedaling a 1 atmosphere sub might be like pedalling a
tractor-trailer. But on the other hand I've heard the Captain can do it, and
he's in his eighties. Hats off to him!

- Alec 

-----Original Message-----
From: Ray Keefer [mailto:Ray.Keefer@Sun.COM]
Sent: Wednesday, November 07, 2001 3:38 PM
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] UEM Marketing Research Time

Hi Folks,

Captain George Kittredge has been working on a new design called
the UEM (Ultimate Exercise Machine). George has a few
marketing type questions. I'll summarize but you can read his mail
for details.

1. Would you accept the elimination of the drop lead weight?
   An emergancy high pressure air blow system and flooding out the
   submarine through the 2" quick closing valve would be kept
   for emergencies.
2. Price. What price would be acceptable for a basic pedal power sub 
   capable of going to 250 feet? At what price would you pull out
   the check book and buy one?
3. What price for the sailing option?
4. George didn't ask but would you want to buy plans or actual sub?
5. George wants to eliminate batteries and air tanks from normal 
   operations as charging batteries and scuba tanks is a pain.
   Can you part with these? Keep in mind no motors so no need for
   for big battery banks. Is there a need for any batteries at all?
   Any scuba tanks would be for emergancies only but I am not sure
   how George intend to blow the main ballast tanks clear. Maybe
   a hand pump.
6. Any intest for UEM out in PSUB land?

------------- Begin Forwarded Message -------------

Date: Wed, 07 Nov 2001 05:02:37 -0500
To: Ray@psubs.org
From: Captain George Kittredge
Subject: UEM

Ray,  Would you do something for me?  Attached is a photo of UEM which I
took on the 4th of November.  As you know, my original intention was to
make a dry, pedal power submarine which could also sail.  It operated
beyond my expectations in everything but its turning circle.  I had the
rudder in front of the propeller like the Navy N subs.  I wanted a smaller
turning circle and better maneuverability.  The rudder is now aft of the
propeller and works fine.  But I want to make another change.  Charging
batteries and scuba tanks is a pain.  I am sure that I can eliminate both,
keeping a small scuba tank for emergency but everything else would be self
contained.  Here is what I would like to find out from your readers.  1)
Would they accept the elimination of the drop lead weight keeping a high
pressure air blow system instead for emergency.  Or would they want to
retain the drop lead feature?  Of course, they could always flood out the
submarine through the 2" quick closing valve in the aft head of the
submarine and make a buoyant ascent.  2) Price?  What price would be
acceptable for the basic pedal power sub capable of going to 250 feet?
What price for the sailing option?  In regard to the maximum operating
depth, the calculated collapse depth of the hull is 1140 feet but the
acrylic hemsiphere, when we tested the Mk III in General Dynamic's
(Electric Boat) test chamber at Groton, Connecticut, failed at 824 feet;
however, the hemisphere could be made to withstand the collapse pressure of
the steel hull.

Best regards,  George
------------- End Forwarded Message -------------