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(...) In lugnet.technic, Tobbe Arnesson writes: (...) Opening the valve releases the oil and whatever force is pressing on the piston forces the oil out and back into the resovoir. The old pnumatic system worked by pumping the air out of the (...) (22 years ago, 13-May-03, to lugnet.technic, lugnet.robotics)
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(...) So there is no system to "suck" it back in apart from ol' gravity? True they are almost always used to tip lorry beds and rise elevators and such. (...) I know, I'm actually old enough to own a few of them :) Thanks! Best regards, /Tobbe (URL) (...) (22 years ago, 13-May-03, to lugnet.technic, lugnet.robotics)
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"Tobbe Arnesson" <StPnAtM@lotek.nu> wrote in message news:HEtrzr.1EBt@lugnet.com... (...) they (...) While some are certainly single acting, double acting versions are available: (URL) are better examples than this kicking around, I found one a (...) (22 years ago, 14-May-03, to lugnet.technic, lugnet.robotics)
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(...) They need to be more bulky for starters but I think I know how to make one. It would be a nightmare to build one in 1:20 scale that does not leak too much though (at least for me without proper industrial tools). I won't try to explain how (...) (22 years ago, 14-May-03, to lugnet.technic, lugnet.robotics)
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(...) Jennifer, Tobbe, Other interested 'Air Heads'; I have used Robart tubing and "T" couplers with the Lego pneumatic cylinders, valves, etc. The tubing is not quite as flexable as the Lego tubing but it works pretty well. The barbed "T"s are a (...) (22 years ago, 14-May-03, to lugnet.technic, lugnet.robotics)
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| | Re: Custom Pneumatic Parts
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(...) There might be a problem with stiction...ie, a certain amount of pressure necessary to overcome the internal friction of the rod in the cylinder. For more options and similar prices, see: (URL) might also have stiction problems tho... --Bram (...) (22 years ago, 14-May-03, to lugnet.technic, lugnet.robotics)
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