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> What can you do with those big pumps? can you convert them into
> working pneumatic cylinders? I only need one manual pump!
This has been my holy grail. The manual pumps put out more volume of
air per stroke then the little ones.
The bad side is that because air compresses so easily, the first 3/4 of
the stroke is not very effective, yet is the easiest part of the stroke
for a motor to push. what one REALLY needs is a way to have a motor
easily push that last 1/4 of the stroke.
In my playing, I've never found a nice way have a motor do this.
This is why my second last stacker (the one that didn't work) looks like
a steam train, I thought if i put two pumps opposite each other, then
the down stroke of one would be helped by the spring return of the
second.
Well, you might remember the result. Never got full stroke.
there are a few web pages out there that try this, But I've never found
a nice one.
this was the idea that I used:
http://prelude.PSY.UMontreal.CA/%7Ecousined/lego/3-Physics/pneumatics/images/pump3.jpg
the proper full HTML page is:
http://prelude.PSY.UMontreal.CA/%7Ecousined/lego/3-Physics/pneumatics/a-pressure.htm
Also at that stacker meeting, I think it was Phil, who suggested to me
that the 2 40t gears together have the right stroke push.
I might just have to sit down and play.
Or you can do it and tell me what you found.
:)
Chris
Visit my newly revamped walker page @
http://www.members.home.net/cmagno/technics/index.htm
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Message has 1 Reply:
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| <warning type="lego-mod" sensitive="purists"> You can use the big cylinders as compressors. Just carefully unwind the spring from the shaft - you can do it without damaging the spring if you're careful. Store the spring for reapplication later. I've (...) (23 years ago, 24-Apr-01, to lugnet.org.ca.rtltoronto)
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| | again...
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| I didn't think it could be done. It's happened a few times before... once when the classic space sets came out for the first time ... who didn't look at the Galaxy Explorer and just 'fall in love with it'. Then when the Mindstorms came out, Loved (...) (23 years ago, 23-Apr-01, to lugnet.org.ca.rtltoronto)
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