Found an inexpensive pump for slower scale boats

[Make-a-Wake]

I believe this is a water pump, sure is affordable, my work for tugs and such.................


http://www.ebay.com/itm/Thunder-Tige...item53efb1013f

[tsenecal]

sorry, but that is not a pump, it is a pressure switch used to shut off a pump, before it over-fills the ballast tank/bag on a sub...

(specifically this sub)

http://www3.towerhobbies.com/cgi-bin...&I=LWC556&P=ML

all total, there are about a dozen parts that make up the ballast tank/bag, pump, controller and failsafe, totaling about $100.