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Subject: 
Re: Pnuematics: e-switch and thoughts
Newsgroups: 
lugnet.build, lugnet.robotics
Date: 
Wed, 11 Aug 1999 08:59:13 GMT
Viewed: 
118 times
  
"Robert Munafo" <munafo@gcctechNO.SPAMcom> writes:

In lugnet.build, Linc Smith writes:
[...]
First here is a micromotor actuated pneumatic switch
http://www.members.home.net/ourcreations/pictures.htm .  This design has a
fairly small bounding box. [...]

That link doesn't work anymore. Can anyone tell us how this
construction worked? (any gears? Levers? Maybe a worm gear?) I might
want to use the idea in a Mindstorms design.

It's a real pity that Linc Smith isn't active here anymore; he seemed to
be a very resourceful person.

Anyway, I remember fairly well how this switch works, and, yes, there is
a worm gear involved.  The key idea is this: You put one of the Technic
Connector with Axlehole (Catch Cross) onto the pneumatic switch axle arm
and a small axle through the connector's axlehole.  Then, put a 4L
liftarm onto the small axle coming out of the connector sitting on top
of the switch.  This liftarm should point "downwards", so that the lower
hole and the pivot of the switch coincides.  Next, put an axle through
the lower hole in the liftarm and a 24t cog onto this axle.  Then, let a
worm gear driven by a micromotor mesh with the 24t cog, and voila!

There's probably many ways to organize this setup in a model, depending
on the space available.

Fredrik



Message has 1 Reply:
  Re: Pnuematics: e-switch and thoughts
 
(...) And in message (URL) Soh Chio Siong writes: (...) here anymore. By the way, I also found another design that puts a z8 gear on the micromotor meshed with a z40 gear, then uses a 1x5 half beam to link one of the 4 center holes on the z40 gear (...) (25 years ago, 11-Aug-99, to lugnet.build, lugnet.robotics)

Message is in Reply To:
  Re: Pnuematics: e-switch and thoughts
 
(...) That link doesn't work anymore. Can anyone tell us how this construction worked? (any gears? Levers? Maybe a worm gear?) I might want to use the idea in a Mindstorms design. (by the way, I really liked the soda bottle tank idea and might try (...) (25 years ago, 10-Aug-99, to lugnet.build, lugnet.robotics)

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