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where can i find micro pumps? - where to buy

R/C Submarine modelers

Postby petn7 » Sat Jun 14, 2003 4:16 pm

i'm thinking about making my own model sub with static ballast and i was wondering where i could find small pumps? i'm looking for pumps about the size of a "C" cell battery if not smaller. they need to be reversable and be able to pump to maybe 1 bar pressure. the pump doesn't even need to make a good seal as the pump can constantly be on in order to keep the ballast tanks full of water. any place i can find something like this?

thanks ahead
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Postby TK-7642 » Wed Jun 18, 2003 9:49 am

Try edmund scientific.
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Postby Seasub88 » Wed Jun 18, 2003 10:01 am

hi subtech has just what you need. Cpntact Skip
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Postby petn7 » Wed Jun 18, 2003 11:37 am

i already ordered from edmund scientifc; i was wondering if there were more pumps out there. as for subtech, is the ABP motor pump really that small? if the motor was about S300 size, i could maybe use it, but i thought it might be like a 540 (?) car motor size. oh, and i e-mailed them...they haven't replied, so they don't deserve my business if i can help it.
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Postby Robse » Wed Jun 18, 2003 11:58 am

Hi..

I bought the APB pump from SubTech a while ago for my Ohio, as I'm (also) building the entire inside stuff my self from scratch. The APB pump is a little more than 2" long, and app. the same from stud to stud... Allthough it's a fine pump, it sounds like it's a bit too large for you..
Yours Sincerely, Robert Holsting, Denmark
1/81 SSBN Ohio Class scratch builder, more at www.robse.dk

"Never be afraid to try something new; remember that it was amateurs who build Noah's Ark, and professionals who build the Titanic"
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Postby petn7 » Wed Jun 18, 2003 5:03 pm

i appreciate that pump info; yeah it's a little too big for me, thanks again for your help.
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Postby Bill Marks » Wed Jun 25, 2003 8:21 pm

Try an electric fuel pump for glo-fuel for model airplanes. They are a very small gear pump, reversable and CHEAP! Check out Tower Hobby.
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Postby petn7 » Wed Jun 25, 2003 11:21 pm

i just ordered two pumps, thx!

oh, i think i just e-mailed you. another thing; how much pressure can those fuel pumps provide?




Edited By petn7 on 1056597838
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Postby Bill Marks » Mon Jun 30, 2003 2:05 pm

I have never measured the output pressure of the glo-fuel pumps but they will squirt water 10 feet through a small orifice.
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Postby Carter » Mon Jun 30, 2003 10:55 pm

SonicTronics Mark X. Be sure to seal it properly: Open the case, place a dollop of silicon cement in compartment surrounding pump & also in opposite compartment around wire exits. Nick brass shafts and secure red connector pieces with super glue. Close case and seal with electric tape. Use a Sullivan fuel filter on intake/efflux nozzle. Hose (silicon fuel line) runs from second nozzle to ballast tank. A second hose runs from the top of the ballast tank up the sail. The pump does not leak so a T-valve is not needed. I believe the Mark X comes in both six and twelve volt models.
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