Subject:
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Re: pneumatics & mindstorms?
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 13 Oct 1998 10:02:58 GMT
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Viewed:
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1949 times
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Chris
> snip
> So, yeah, pneumatics are powerful enough for most things. The problems are • 1:
> you need a compressor to power them, which eats batteries; and 2: you need • a
> (micro)motor and pneumatic switch for each output channel as well as the
> pneumatic cylinder. Fredrik will not be doing this in his small, elegant
> models (I think... this is not a challenge, boyo :)
> snip
What sort of gearing do you need to operate the switches from a motor? Do
you have any pictures of this assembly? I've often thought about trying it
but never got around to doing it since I assumed that the power would be
insufficient (or that it would wrench the bricks apart).
Andy Bower
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Message has 2 Replies:
 | | Re: pneumatics & mindstorms?
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| (...) Fortunately, the new technic motor doesn't need gearing down to throw an air switch. just directly connect a liftarm between motor and switch, but use a whit slip gear inbetween for safety. Eric (26 years ago, 13-Oct-98, to lugnet.robotics)
| | | Re: pneumatics & mindstorms?
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| Andy Bower wrote in message ... (...) With a lot of fiddling I managed to get a worm gear directly attached to a micromotor to operate the switch via a toothed plate. It made the whole assembly fairly compact (3x12x5 or so), but slow and noisy. (...) (26 years ago, 14-Oct-98, to lugnet.robotics)
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Message is in Reply To:
| | Re: pneumatics & mindstorms?
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| (...) A single pneumatic cylinder will break a 16-beam in half fairly readily. My (big) truck crane boom weighed about 4lbs, mith a center of mass about 18" from the bottom, and 3 cylinders could lift that when perched about 5" from the pivot. So, (...) (26 years ago, 12-Oct-98, to lugnet.robotics, lugnet.build)
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