 | | Pneumatics: the old and the new —Rob Stehlik
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| | | Hello pneumatics fans, I have been working a lot with pneumatics lately, and have made some interesting discoveries. I think the most notable is a method of using the old style red cylinders with the new pneumatics system. I came across this as I (...) (23 years ago, 1-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | Re: Pneumatics: the old and the new —Geoffrey Hyde
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| | | | | Wow!! That is a fantastic model, it's a shame they're not produced anymore - I wonder if TLG would be capable of manufacturing parts which function the same way as the old ones did? If it were possible to obtain new parts that performed the same (...) (23 years ago, 2-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | Old Caterpillar Tread Chainlinks —William Howard
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| | | | | | Hi, Can anybody tell me what gears drive the old caterpillar tread chainlinks (service pack 5244 I think) and at what spacing the axles would be for a pack of 54 (I'm assuming you need two packs, one for each side) Thanks William (23 years ago, 2-Mar-02, to lugnet.technic)
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| | | | | Re: Pneumatics: the old and the new —Soh Chio Siong
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| | | | | Hi there, Rob That thread led to an extensive discussion into the depths of "vacuum storage". It would appear that storing compressed air is no problem but 'the whole concept of "storing vacuum" is a little disturbing.' Well, you can certainly pump (...) (23 years ago, 2-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | Re: Pneumatics: the old and the new —Michael Obenland
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| | | | | | | (...) Now things get a little philosophical :) The air tank itself has no idea about vacuum or pressure. The only thing the tank stores is a pressure difference. The difference between the outer pressure and the inner presure. This difference might (...) (23 years ago, 2-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | | | Re: Pneumatics: the old and the new —Tobbe Arnesson
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| | | | | | | | (...) You cold use the "stylish" hard plastic tubing that came with a lot of Technic sets in late '90ies and also act's as outer hose for flexi cables. Of course you'll still need small portions of pneumatic hoses but at least the amount is limited. (...) (23 years ago, 2-Mar-02, to lugnet.technic)
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| | | | | | | Re: Pneumatics: the old and the new —Geoffrey Hyde
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| | | | | | "c s soh" <cssoh@singnet.com.sg> wrote in message news:3C8076A2.E27D98....com.sg... (...) You most certainly can store vacuum. How would a TV set work, otherwise? When the tube is finally smashed or broken at the end of it's life, the vacuum (...) (23 years ago, 3-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | | Re: Pneumatics: the old and the new —Soh Chio Siong
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| | | | | | (...) Exactly! (...) That's right! (...) Oh oh! Methinks you have not had the simple pleasure of playing with a hand pump (the new type of course) and an air tank like in the 8250 Submarine or 8462 Tow Truck or such like. Try it! (...) No need, just (...) (23 years ago, 4-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | | Re: Pneumatics: the old and the new —Trevyn Watson
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| | | | | | c s soh wrote: > (...) Umm... you still need the recharge the pressure in the tank once in a while, dont you? (23 years ago, 5-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | | Re: Pneumatics: the old and the new —Soh Chio Siong
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| | | | | | (...) But, of course. As was carefully explained in my earlier post at (URL) is, you can store compressed air in a blue air tank (or as many of them as you have in your possession) and then release it for use later on. Then you charge it up again. (...) (23 years ago, 5-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | | Re: Pneumatics: the old and the new —Trevyn Watson
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| | | | | | (...) But this is exactly how Rob's window walker worked. I had the privilege of seeing it first person, and he would work the pump a bit (to take air out of the blue tanks), then start it going. Then after a while, he would work the pump more. This (...) (23 years ago, 5-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | | Re: Pneumatics: the old and the new —Soh Chio Siong
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| | | | | | (...) Hi, those who have the old pneumatics and a couple of the blue air tanks may want to try the experimental setup at (URL) it! And I suspect the window walker critter would still work without the air tanks :-) (23 years ago, 6-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | | Re: Pneumatics: the old and the new —Soh Chio Siong
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| | | | | | | (...) Hey, don't blame me if it should fall off though ;-) Speaking of wall climbing robots, does anyone have or seen one of these 4-legged Climb@Tron creatures shown at (URL) look kinda cute especially Vertibug. And at $14.95 each, they're a lot (...) (23 years ago, 6-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | | Re: Pneumatics: the old and the new —Trevyn Watson
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| | | | | | (...) And most other pneumatics systems do too, but its easier if you have a tank in which you have a high pressure (or a low pressure). (23 years ago, 6-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | Single acting pneumatics with spring return —Rob Stehlik
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| | | | | Hello again, I think I should have another go at this... I wanted to say "Check this out, I found an interesting application for the old pneumatic cylinders" What it came out sounding like was "Mr. Soh was wrong! Look at me prove him wrong!" Sorry (...) (23 years ago, 6-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | Re: Single acting pneumatics with spring return —Horst Lehner
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| | | | | | | (...) True, but there is one notable difference, as others have pointed out before: When compressiong air, the pressure difference is limited only by implementation details. The pressure inside the tank usually is not just slightly higher than (...) (23 years ago, 7-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | | | Re: Single acting pneumatics with spring return —Soh Chio Siong
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| | | | | | (...) How coincidental, but it too struck me that we needed to backtrack as the thread was getting pretty muddled up. It seemed to me that we may not be working on the same assumptions. So here's the re-play... The post that you quoted (URL) in (...) (23 years ago, 7-Mar-02, to lugnet.technic, lugnet.robotics)
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| | | | | Re: Pneumatics: the old and the new —Dean Hystad
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| | | | Very nice design. I don't have access to old style pneumatic cylinders, but was thinking of doing something similar with the new double acting cylinders. Because I don't have a check valve in the new pneumatics that would allow me to store vacuum, I (...) (23 years ago, 10-Mar-02, to lugnet.technic, lugnet.robotics)
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