 | | Re: Pneumatic Questions
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"Kevin L. Clague" <kevin_clague@yahoo.com> wrote in message news:Iq9H1s.2Ao@lugnet.com... (...) Has anyone tried to open up the pneumatic switch (old and new ones) to see if there is a way this 4th port could be vented into a tube and thus (...) (20 years ago, 21-Nov-05, to lugnet.technic)
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| | Iain - new video - what I did at work last week.
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(URL) (20 years ago, 20-Nov-05, to lugnet.org.ca.rtltoronto)
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| | LIEBHERR R954
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(URL) are the first photos of my new model of excavator. LIEBHERR R954 with demolition arm + roadway that can be widened. Feel free to comment. Fabio www.abstechnology.org coming soon new photos (20 years ago, 20-Nov-05, to lugnet.modelteam)
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| | Lego Building Classes
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Lego Building Classes I teach Lego Building Classes in two locations in New Jersey. Lego Classes are designed to convey general building knowledge, promote positive social interaction by allowing students to share their ideas and creations. Classes (...) (20 years ago, 20-Nov-05, to lugnet.general, lugnet.loc.us.nj, lugnet.loc.us.ny)
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| | Re: Pneumatic Questions
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(...) Hi Andrew, Here is a schematic for an engine that combines pressure and vaccume on both piston faces. (URL) uses the four port switch I described in this thread: (URL) The image shows a compressor and air tanks for having pressure and vaccume (...) (20 years ago, 20-Nov-05, to lugnet.technic, FTX)
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| | Re: Pneumatic Questions
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(...) I found this picture on my brickshelf account. It shows the lego geometry needed to implement the four port switch. The hoses are not right, but the switch positions and lever linkages are correct. (URL) (20 years ago, 20-Nov-05, to lugnet.technic)
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| | Re: Pneumatic Questions
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(...) I'm not at home, so I can't lookup the history on this in my LEGO notebooks. I think Doug Carlson invented this. I rederived it today, because I knew it wasn't too complicated. It involves four switches and four T's. The four switches form two (...) (20 years ago, 20-Nov-05, to lugnet.technic)
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| | Re: Pneumatic Questions
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(...) Hi Billy, A LEGO pneumatic switch has four ports. You are probably familiar with the obvious three: left, center and right. The fourth port is not obvious. When you've got pressure on one port of the piston, and you switch the switch so you (...) (20 years ago, 20-Nov-05, to lugnet.technic, FTX)
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| | Re: Turtle Creek Baldwin VO1000 switcher
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(...) Steve, I just noticed the front truck, and I have to comment on how much I like the steps and the hand rail. Nicely done. The engine is a nice engine too, and the stripe does look nice, though the stripe doesn't really make the LEGO engine (...) (20 years ago, 20-Nov-05, to lugnet.trains)
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| | Re: Opening Door
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(...) --SNIP-- (...) Well, I took Mark's suggestion to use a bracket and an idea I'd had to use a panel to make more space for the arms and came up with this solution. I prefer the one Bruce suggested but I wanted one without the gap as well. I (...) (20 years ago, 20-Nov-05, to lugnet.build.schleim, FTX)
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