Building : 13426


Building / 13426	13425 \| 13427

Subject:	Re: Variable Speed, reversible pneumatic engine
Newsgroups:	lugnet.technic, lugnet.robotics, lugnet.build
Date:	Wed, 4 Jun 2003 22:19:06 GMT
Viewed:	131 times

In lugnet.announce.moc, Kevin L. Clague wrote: > After reasonable feedback about the complexity of my first reversible pneumatic > engine, I realized there was a very simple mechanical solution that would give > reversability *and* variable speed. > > http://www.brickshelf.com/gallery/kclague/Computing/p6010044.jpg > > http://www.brickshelf.com/gallery/kclague/Computing/p6010045.jpg Hi Kevin, Wow!!! You have quite a talent! Now, why is it that I have to read all your postings 3 or 4 times? If I understand right, you are able to continually adjust the timing in each direction up to 45 degrees? Other valve gears that are variable do so by limiting the movement of the valve and keep the timing the same. Of course there is a throttle too. That would be mighty tough, I think, with a Lego valve. Your solution is a clever alternative. Will there be more info on exactly how it is built? I think I can grasp most of it but the reverse mechanism is a little unclear to me. As a pneumatic engine enthusiast I really appreciate this kind of work. Thanks for posting it. Best regards, Paul

Message has 1 Reply:

		Re: Variable Speed, reversible pneumatic engine
(...) Hi Paul, Sorry about the posts not making sense. The differential lets me make continuous timing adjustment through 360 degrees. The two pistons are offset by 90 degrees, as are the switches. The differential lets you set the angle between the (...) (21 years ago, 5-Jun-03, to lugnet.technic, lugnet.robotics, lugnet.build)

Message is in Reply To:

		Variable Speed, reversible pneumatic engine
After reasonable feedback about the complexity of my first reversible pneumatic engine, I realized there was a very simple mechanical solution that would give reversability and variable speed. (URL) difference between going forward vs. backwards (...) (21 years ago, 4-Jun-03, to lugnet.announce.moc, lugnet.technic, lugnet.robotics, lugnet.build) !!

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