 | | Re: Lego pneumatic systems overview?
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(...) What I'm currently thinking about is a mechanisim that will move an arm that's hinged at one end through a near 180 degree arc before it comes to a rest and then to have the reverse switch pull the arm back to it's initial position. At one end (...) (21 years ago, 25-Sep-03, to lugnet.technic)
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| | Re: Lego pneumatic systems overview?
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(...) That's good news. My interest is in building full-built models and not the technic see-through style efforts that I usually see the pneumatics used on so it'll be important that the cylinders are capable of moving the combined weight of the (...) (21 years ago, 25-Sep-03, to lugnet.technic)
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| | Re: Lego pneumatic systems overview?
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(...) Thanks for the heads up, that presentation really does help out quite a bit and the outlet plug is also a good idea. I'm awfully surprised that there is no official outlet cap after all these years, but I suppose that Lego never felt one was (...) (21 years ago, 25-Sep-03, to lugnet.technic)
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| | Re: Shocking news from Brickset
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(...) My speculation #3 has come true!! (URL) from S@H> when told to ship to Canada: Item#: 8438 Ages: 11+ Pieces: 839 Price: USD 84.99 Preorder this item today, will ship by 24 Oct 2003 Hooray! Even though I already have a 8431. The Backhoe is on (...) (21 years ago, 25-Sep-03, to lugnet.technic, FTX)
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| | Re: Lego pneumatic systems overview?
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(...) My friend Doug has used them up to 30 PSI. (...) I don't know what the maximum allowable pressure is, but 30 PSI is probably a good upper bound. It depends on which direction you are trying to move the weight. If you are trying to move it (...) (21 years ago, 23-Sep-03, to lugnet.org.us.lugola, lugnet.technic)
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| | Re: Lego pneumatic systems overview?
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(...) By highly scientific methods [1] I got ~54N, beyond that the cylinder starts leaking. With a diameter of the piston of 13mm that gives 54N/(pi*0.0065mm^2)=406833.94 Pa ~ 4 times atmospheric pressure. That is rather new transparent cylinder (...) (21 years ago, 23-Sep-03, to lugnet.org.us.lugola, lugnet.technic)
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| | Re: Lego pneumatic systems overview?
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In lugnet.org.us.lugola, Brian Reynolds wrote: <<snip>> (...) The hoses will pop-off before any damage is done due to preassure. The preassure will also leak out in time so there's no danger there either. (...) Depends on the compressor. (...) Don't (...) (21 years ago, 23-Sep-03, to lugnet.org.us.lugola, lugnet.technic)
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| | Re: Lego pneumatic systems overview?
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Hi Brian, Have a look to Kevin's presentation: (URL) it doesn't answer all of your questions, but at least to point 4: use a small piece of tube and plug in a minifig tool handle or a bar such as (URL) (21 years ago, 23-Sep-03, to lugnet.org.us.lugola, lugnet.technic)
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| | Lego pneumatic systems overview?
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Hey there folks, recently my eyes were opened to the mechanical possibilities that the Lego pneumatic systems allowed and today I received my Bricklink order for a couple pumps, pistons, switches, airtanks, and tubes and have been happily testing (...) (21 years ago, 23-Sep-03, to lugnet.org.us.lugola, lugnet.technic)
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| | Re: Granite Question
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(...) Cool! What about the others? This information seems to be missing from (URL) also somewhat curious about the year 2000 Throwbots. Thanks, TWS Garrison (21 years ago, 23-Sep-03, to lugnet.technic.slizer)
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