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Subject: 
Re: Linked cranks mechanical puzzle
Newsgroups: 
lugnet.technic
Date: 
Sat, 6 Feb 2010 20:34:04 GMT
Viewed: 
30301 times
  
In lugnet.technic, Alexander Holroyd wrote:
> Here is my current favourite MOC:
> 
> <http://www.youtube.com/watch?v=O7_wfKJAX7s>
> <http://www.brickshelf.com/cgi-bin/gallery.cgi?f=418894>
> 
> It's a Lego implementation of an amazing mechanical puzzle invented by
> Oskar van Deventer and Bram Cohen, as seen here:
> 
> <http://www.youtube.com/watch?v=j6J_cHM9mEw>
> 
> I can't improve on the explanation given in this second video - just watch it!
> Basically it's a puzzle a bit like Rubik's cube, in which you scramble it and
> then try to get back to the starting position.  (Much easier than Rubik's cube,
> but a very interesting mechanism).
> 
> Planetary gears like in the original did not seem practical, so it was quite an
> interesting challenge fitting the necessary gearing into this small space.  (My
> first attempt fell apart because there was actually no connection between the
> two halves!)
> 
> I think there's great potential for mechanical puzzles in Lego - I've seen a few
> but not many...
> 
> Enjoy!  Alexander

Really nice. And thanks for the LDraw instructions. I really like building this
kind of contraptions and mechanisms.

Jetro



Message has 1 Reply:
  Re: Linked cranks mechanical puzzle
 
(...) So do I... Now I just have to find how to align again the fingers without dismantling everything ;o) Philo (17 years ago, 7-Feb-10, to lugnet.technic)

Message is in Reply To:
  Linked cranks mechanical puzzle
 
Here is my current favourite MOC: (2 URLs) It's a Lego implementation of an amazing mechanical puzzle invented by Oskar van Deventer and Bram Cohen, as seen here: (URL) I can't improve on the explanation given in this second video - just watch it! (...) (17 years ago, 6-Feb-10, to lugnet.technic, lugnet.announce.moc, lugnet.robotics)

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