[PSUBS-MAILIST] (no subject)

[hank pronk via Personal_Submersibles]

Graham,
In the world of marine jet drive it is well known that jet drive takes two times the horse power to do the same job.  Jet drive is well suited to a craft that needs a shallow draft.  I think you will find it very complicated to control and it will be very inefficient. I have been down this road, I love the concept but abandoned it.  If you go forward may I suggest you start with a jet drive.  It is not a simple part to replicate.  The impeller tolerances are critical.  I have a jet unit on the shelf I could donate to your project.  The jet is from a jet ski. I would consider a single rear motor on a full gimbal.
Hank --------------------------------------------
On Sun, 10/26/14, Graham Bayliss via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: [PSUBS-MAILIST] (no subject)
 To: "'Personal Submersibles General Discussion'" <personal_submersibles at psubs.org>
 Received: Sunday, October 26, 2014, 7:39 AM
 
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 #yiv9417249292  Hi   I am near the end of my build
 of my k350 and have started to look at new designs I am
 interested in building a flyer sub and have come up with a
 design which will include a vectored motor drive this will
 enable my flyer to hover and stop where ever I want. I have
 designed a motor unit which will drive a fan type propeller
 as an intake this will force water to the rear of the unit
  where it is compressed  then it is forced into ducting
 which will take  the water to four nozzles on the side of
 the craft. The nozzles are able to turn three hundred and
 sixty degrees  both side are independent of one another so
 rolls will be achievable. The reason for a vectored motor is
 you only need one motor source and one power pack this will
 ease the maintenance and increase the enjoyment of using
 your sub. I am interested in the clubs thought of this kind
 of design.  Graham 
  
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