 | | Re: What the? Hydraulics —Nathan Bell
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| | | (...) One question I have is related to the construction of the first generation of the Lego pneumatic system that had 2 ports for each piston (circa-1989). I had a piston from a 1989 pneumatic universal set in which I tried to put water in them to (...) (19 years ago, 23-Nov-05, to lugnet.technic)
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| | | | | Re: What the? Hydraulics —Kevin L. Clague
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| | | | (...) FYI: The first LEGO pneumatics system had single ported pistons. Also the only difference between pump and piston was that the pump had return springs. Here is the 60mm version of the original pneumatic single ported system. (URL) bricklink (...) (19 years ago, 23-Nov-05, to lugnet.technic)
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