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Geared water pumps

R/C Submarine modelers

Geared water pumps

Postby Marvin Harten » Tue Apr 23, 2013 10:29 pm

Does anyone have any information on submersible geared water pumps that can be used to pump water into and out of a ballast chamber?

Thanks.
Marvin Harten
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Re: Geared water pumps

Postby Sub culture » Wed Apr 24, 2013 5:28 am

There are a few on the market. They vary in price, quality and size. What boat is it for?
'Why are you staring at an empty pond?'

Want to dive your boat in crystal clear water? Then you had better Dive-in- http://www.diveintomodelsubmarines.co.uk
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Re: Geared water pumps

Postby Marvin Harten » Thu Apr 25, 2013 1:18 am

This is for a basic Akula type hull that is approx. 80" long with an 8.5" beam. It will take 4lbs. - 6lbs. of water as ballast. The boat is really a test bed for electric motor torpedoes and some other electronic and mechanical ideas.
Thanks again.

Marvin Harten
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Re: Geared water pumps

Postby Sub culture » Thu Apr 25, 2013 4:57 am

Okay- big boat.

Geared pumps don't have a terribly high flow rate in relation to their size. A good pump is made by a company called Kavan. This pumps about 1.8 litres a minute, and can make about 40psi.

You would probably want two of these running in parallel for a boat your size.
'Why are you staring at an empty pond?'

Want to dive your boat in crystal clear water? Then you had better Dive-in- http://www.diveintomodelsubmarines.co.uk
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Re: Geared water pumps

Postby Johnredearth » Fri Jun 28, 2013 2:08 am

Hi

Try a simple valve instead of using a geared pump. [http://youtu.be/AQ8UrO42Mkg]
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