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Hi, I have recently developed a pneumatic gizmo to remotely act on my train track points, which is working quite nicely. The thing is, I don't know *how far apart* can I place the compressor so that the loss of charge in the tubes isn't too big. Has (...) (22 years ago, 6-Sep-02, to lugnet.technic)
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| | Re: Pneumatic tubes capabilities
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(...) From my experience, you can have really long tubes (10~20 feet, or more) and not have significant losses due to friction. What you should be concerned with is the volume of the tubes. Basically, if you have a lot of long tubes, your system (...) (22 years ago, 6-Sep-02, to lugnet.technic)
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| | Re: Pneumatic tubes capabilities
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(...) In a way, that was what I meant: since the tubes are made of rubber, they are somewhat elastic (thus they can increase their volume significantly if they are long enough). (...) Ok, I guess I got it: it can work, but it must be always "on", (...) (22 years ago, 6-Sep-02, to lugnet.technic)
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| | Re: Pneumatic tubes capabilities
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"Thomas Avery" <thomas.avery@intec-hou.com> wrote in message news:H21B7s.FzE@lugnet.com... (...) *how (...) and (...) it (...) be (...) cylinder (...) plenty (...) Hmm... When the valve is switched in one direction, one tube to the cylinder gets air (...) (22 years ago, 6-Sep-02, to lugnet.technic)
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| | Re: Pneumatic tubes capabilities
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(...) I don't thing tube stretch is a factor here. The pneumatic tubes do not expand very much at the normal pressures of Lego pnuematics. The tubes are relatively stiff. The volume comes from just the long length of tubing. (Think of a volume (...) (22 years ago, 6-Sep-02, to lugnet.technic)
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| | Re: Pneumatic tubes capabilities
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It's a pity there isn't a remote-control pneumatic switch you could connect up to Mindstorms or a similar system. I would *love* to be able to remotely control switches, this would solve your problem somewhat by drastically cutting (figuratively (...) (22 years ago, 7-Sep-02, to lugnet.technic)
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