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I acquired a bunch of LEGO recently, mostly Technic, and one piece I haven't seen before. It's basically a black 2x4 brick with three ports for attaching air hoses. What's it for and what sets did it come in? It seems like it might have valves in it (...) (26 years ago, 22-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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I think this part was used in Legos early pneumatic history. You ran a hose from your pump to the center port on the 2 X 4 brick. You then ran a hose from each side port to the top and bottom ports on you pneumatic switch. Another hose ran from the (...) (26 years ago, 22-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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Darn text wrapping gets me every time! (...) ======== Posted via the LUGNET discussion group web interface ======== (URL) Search, Read, Post, or Watch Traffic (26 years ago, 22-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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> I acquired a bunch of LEGO recently, mostly Technic, and one piece > I haven't seen before. It's basically a black 2x4 brick with three > ports for attaching air hoses. What's it for and what sets did it > come in? It seems like it might have (...) (26 years ago, 22-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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(...) It is? I always thought there were some kind of valves inside it which split the air into different nozzles depending on the air flow direction. But then again, I only had one as a kid, and never did any experiments with it. Fredrik (26 years ago, 23-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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(...) Well, okay, I never opened one up. But if you think about how it operates - it's pretty basic. (26 years ago, 23-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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(...) After seeing the diagram in that old Technic set, it makes more sense that this is a valve block, without valves somewhere the piston would just slide back down. Which leads me to think that the pneumatic switch is different now and has (...) (26 years ago, 23-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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I think it is a dacta angle sensor. Selçuk Matthew Bates wrote in message ... (...) now (...) has (...) it, (...) round, (...) a (...) (26 years ago, 23-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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Hopefully this will clear up the subject of exactly what piece we are talking about. The one I am trying to describe can be found in set 8040. I have a scan of one page in the instructions which illustrates the piece I have in mind. (URL) this piece (...) (26 years ago, 23-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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Matthew Bates wrote in message ... (...) Which leads me to think that the pneumatic switch is different now (...) Actually, no. The crucial difference between the old and the new pneumatics system is that the old one used both pressure and suction, (...) (26 years ago, 26-Oct-98, to lugnet.build)
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| | Re: Identify this pneumatic piece
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(...) That's the piece! Except mine's black. Matt (26 years ago, 26-Oct-98, to lugnet.build)
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