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Subject: 
Re: Any ideas on how to do this with Technic?
Newsgroups: 
lugnet.technic, lugnet.adventurers
Date: 
Tue, 30 Nov 1999 14:24:52 GMT
Viewed: 
1026 times
  
"Paul Davidson" <tinman@direct.ca> writes:

Without any further mechanical apparatus, this will plunge downward at
whatever acceleration gravity exerts, coming to a final crash at the bottom.
Is there any kind of gearing I can add (without using motors) that can slow
this motion?  I.e., is there a way to have the structure *slowly* sink
rather than suddenly?

You can use an pendulum clock to time the mechanism so that it sinks at
a constant speed.  No, I'm not kidding!  Take a look at Leo Dorst's LEGO
clock:

    http://carol.wins.uva.nl/~leo/lego/clock.html

You only need the pendulum, escapement and cogwheel part.  The idea
would be to use the weight of the base to drive the escapement and a
pendulum to make sure the escapement turns at a constant speed.

As an added bonus, you would get the "tick-tock" sounds as the base
sinks.

This would be very cool!  I'm almost tempted to make something like this
myself.

Fredrik



Message has 1 Reply:
  Re: Any ideas on how to do this with Technic?
 
I've received some very good responses here. Jacob Andersen's worm gear idea is what I would do if I were to use a motor, but since gravity already provides energy for the system, a good engineering solution would not use an additional motor. Plus, (...) (25 years ago, 30-Nov-99, to lugnet.technic, lugnet.adventurers)

Message is in Reply To:
  Any ideas on how to do this with Technic?
 
Hi, I'm considering an Adventurers-themed Lego project that involves a structure that, when triggered, can sink into the "ground" (as on The Mummy). My general idea is that at four locations (two on each of opposite sides), the part of the structure (...) (25 years ago, 30-Nov-99, to lugnet.technic, lugnet.adventurers)

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