 | | Re: Lego pneumatic systems overview?
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(...) I'm not sure and my bricks aren't around as I type this; Does the 1 x 1 technic brick [1] (or similar) slide over the hose end when it's connected? If so that should make a real snug fit for the hose. Perhaps some other brick can do this (...) (21 years ago, 26-Sep-03, to lugnet.technic)
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| | Re: Lego pneumatic systems overview?
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Tobbe Arnesson wrote: > 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. I verified this for myself tonight with three pumps working three airtanks and (...) (21 years ago, 25-Sep-03, to lugnet.technic)
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| | Re: Lego pneumatic systems overview?
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(...) The four bar linkages used for driving excavator buckets are good for doing appoximately 180 degrees motion, especially when you have to go "round a corner". The following shows an example - I'm not sure about its angular range but certainly (...) (21 years ago, 25-Sep-03, to lugnet.technic)
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| | Re: Lego pneumatic systems overview?
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(...) Levers are your friend! Have a look at the mechanisms used to drive the buckets on 8455 backhoe (front and back), and similar models. While these operate nowhere near 180 deg, adjustment of lengths/fulcrums may well get you closer. ROSCO (21 years ago, 25-Sep-03, to lugnet.technic)
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| | Re: Lego pneumatic systems overview?
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(...) Near 180 degrees maybe tough. You'll need to keep the piston attached as close as possible to the pivot point of the arm to get the maximum range. <snip> (...) Thanks for the positive feedback. I have three large pumps all attached to the same (...) (21 years ago, 25-Sep-03, to lugnet.technic)
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| | 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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| | Mask Of Light World Premiere at Legoland California - Complete Review Now Up
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I have finished putting up all the different sections of the review of the World Premiere for the Bionicle: Mask Of Light that took place at Legoland, CA up on BZP. I have put up the complete story all on one page on Land Of Bricks as promised, (...) (21 years ago, 22-Sep-03, to lugnet.legoland.california, lugnet.technic.bionicle, lugnet.general) !!
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| | Re: Shocking news from Brickset
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(...) I certainly would mind. First, people will be getting more than enough new-type cylinders with 8455 and any future pneumatic set. Second, it's illegal to have a picture of a toy that differs from what is inside the box; in the picture we see (...) (21 years ago, 19-Sep-03, to lugnet.technic)
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| | Re: Shocking news from Brickset
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(...) If they do, this would need to be reworked: (URL) the state Brickshelf is in, I'm glad that site exists, I tend to forget about it) I would not mind though. But if they, say, changed all the Technic beams into the studless type with lot's of (...) (21 years ago, 19-Sep-03, to lugnet.technic)
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| | Re: Shocking news from Brickset
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(...) That is certainly reason enough to renumber the set. But, the picture we see is the exact same as set 8431. If they do use the newer cylinder, with this amount of change, it's getting further and further away from the original 8460... (21 years ago, 19-Sep-03, to lugnet.technic)
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| | Re: Shocking news from Brickset
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(...) I'd say this is the case. But not one of them, probably all of them. Why keep two different cylinders in production? (21 years ago, 19-Sep-03, to lugnet.technic)
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