Subject:
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Re: Amusement Park Rides
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Newsgroups:
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lugnet.build
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Date:
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Tue, 23 Nov 1999 16:10:39 GMT
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Viewed:
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704 times
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Adrian Drake wrote:
> http://junior.apk.net/~tremor/lego.html
Adrian, I was looking at your amusement park rides. You mention that for
the pirate ship ride, you manualy oscilate the motor back and forth.
Have you tried to create a linear back and forth motion with a motor,
and then use that to do the rocking?
A way which should be relatively simple: Take two gears or pulleys, one
smaller than the other. Stick a grey pin in one of the outer holes in
each gear. Connect the pins with a rod. Drive the smaller gear. The
circular motion of the smaller gear will cause the rod to go back and
forth, which will cause the larger gear to rock back and forth (it can't
go in a complete circle because the rod won't move far enough).
Of course instead of two gears, you can attach the rod to one gear, and
pin it to a slider at the other end. The slider can then run in a rigid
track. This is how a piston engine works (except in a piston engine, the
slider is powered, not the crank).
--
Frank Filz
-----------------------------
Work: mailto:ffilz@us.ibm.com (business only please)
Home: mailto:ffilz@mindspring.com
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Message is in Reply To:
 | | Re: New fighter
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| (...) Nothing is too hard when LEGO is involved! Maybe that'll be my next project. Now that I've finished the P-51, I just have to take more pictures of it, and I need another project. It may well be a wraith. Cool... (...) Especially if I make it (...) (25 years ago, 23-Nov-99, to lugnet.build, lugnet.space)
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