ScrumpyJack wrote:Being new to mmodel submarines can some one tell me why a RCAB system is preferred over any other?
Yes I can under stand that there isn't a off the shelf cyclinder ballast sytem big enough for the 'bigger boat'
But why choose RCAB ?
ScrumpyJack wrote:Cheap and reliable a!!!
Mmm food for thought.
My very first Ballast system just built used a length of 80mm plastic gutter down pipe (left over from guttering the shed!!) two baffles made of some old plastic laying around for the inside of the tank, sealed either end with screwwy end thingys (£5 about) , a caravan water system submersible pump (£9) a pair of 12 volt Valves (£16 about).
It's a basic a ballast tank operation open both valves to dive upper valve vents air, lower valve takes in water.
To surface open upper valve start pump. Bingo !! Works a treat as a stand alone yet to be put in boat. Now if £30 ain't cheap and I reckon I could do away with water intake valve taking the cost down to £22.
But hey I'm a KISS merchant.
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