Re: [PSUBS-MAILIST] Bilg pump

["Pierre Poulin" <pipo305@hotmail.com>]

Thanks Doug.

The bilge pump you used are 500 gpm right? for 8 pounds... so it's it would 
take 75000 gpm to move my sub (1200 pounds) to some degree... And half that 
if we can use the sucking end to some advantage...(some MOVEMENT advantage)  
Well, down the pipe it goes. My sub will then remain as manuverable as the 
Titanic for now.

My sub is going ok. This week I should be able to install the last window 
and hatch seal. It should be completly air-tight then. I will send some 
picture to Ray/John to put my sub on the Psubs hall of fame! After that I 
will do some plumbing and I will be ready for real-time-in-the-water 
trail!!!! I can't wait!! If that works ok. (up and down with ballast) I will 
then install electricity and such commodity as breathing air, light and 
movements.

How is your project going? Still wrestling with all that aluminum?

Pierre "pump-less" Poulin




> From: DJACKSON99@aol.com
> Reply-To: personal_submersibles@psubs.org
> To: personal_submersibles@psubs.org
> Subject: Re: [PSUBS-MAILIST] Bilg pump
> Date: Mon, 15 Mar 2004 16:10:25 EST
>
> Greetings Pierre
>
> I use bilge pumps on my home built ROV, and unfortunately they barely do 
> the
> job and my ROV only weighs about 8 pounds.  See
> http://jackson.parcabul.com/rov/index.html I am in the process of upgrading 
> my ROV and converting the bilge
> pumps to use impellers but even then I don't think they would stand a 
> chance
> of pushing your sub around.  I am going to test a bilge pump to 150 feet
> because I need one on my sub when it is surfaced.  You might be interested 
> in that.
> It could be used to give a wet or ambient more freeboard by pumping a 
> ballast
> tank dry once surfaced, consuming battery instead of compressed air.  Here 
> is
> the pump I am going to test:
> http://jackson.parcabul.com/sub/shurflow_bilge_pump.htm
>
> How are you coming on your sub?
>
> Kindest Regards
> Doug Jackson
> http://jackson.parcabul.com/sub/
>
>
>
> In a message dated 3/15/2004 1:44:06 PM Central Standard Time,
> pipo305@hotmail.com writes:
> Hello all!
>
> A long time ago I saw a R/C sub that used small water pumps for movement. 
> (I
> saw that on psubs).
>
> I was wandering, could we use that on our psubs for small position
> movements? We could use boat's pump (12V) and steer the output in the
> direction we want.
>
> What do you thing about that? It could be a good (read cheap) idea instead
> of minn-kota motors...
>
> Pierre Poulin

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