Online since 2002. Over 3300 puzzles, 2600 worldwide members, and 270,000 messages.

TwistyPuzzles.com Forum

It is currently Thu Apr 17, 2014 11:54 am

All times are UTC - 5 hours



Post new topic Reply to topic  [ 14 posts ] 
Author Message
 Post subject: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 2:44 pm 
Offline
User avatar

Joined: Mon Nov 30, 2009 1:03 pm
Hi Non-Twisty Puzzles fans,

Magic Gears (a twisty non-puzzle) is a paradoxical set of three identical gears that can both mesh in the regular way and all in the same direction. It was inspired by this YouTube video by Jacques Maurel. Maurel writes: "The paradoxical 2 teeth gear set is used in the 'Mercier differential' (using the torque transfer technology) Patented in 1988 by Renault". Oskar's addition to the work is making Chevron Gears as invented by Andre Citroen. This way the three gears become identical and they can both mesh classically and paradoxically.

I have performed this Magic Gears "trick" to several friends, family and coleagues. I get two types of reactions: "wow" and "so what". Apparently, there exist people who are not aware how gears are supposed to mesh :-).

Watch the YouTube video.
Buy this magic trick at my Shapeways Shop.
Read more at the Shapeways Forum.
Check out the photos below. Note that the last picture is a .gif animation. Click it to see the movement.

Enjoy!

Oskar
Attachment:
Magic-Gears---view-1.jpg
Magic-Gears---view-1.jpg [ 30.66 KiB | Viewed 2810 times ]

Attachment:
Magic-Gears---view-2.jpg
Magic-Gears---view-2.jpg [ 32.5 KiB | Viewed 2810 times ]

Attachment:
Magic-Gears---view-3.jpg
Magic-Gears---view-3.jpg [ 35.75 KiB | Viewed 2810 times ]

Attachment:
Magic Gears -animation.gif
Magic Gears -animation.gif [ 343.35 KiB | Viewed 2808 times ]

_________________
Oskar's home page, YouTube, Shapeways Shop, Puzzlemaster, and fan club
Image.


Last edited by Oskar on Sat Mar 17, 2012 3:56 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 3:15 pm 
Offline

Joined: Sun Mar 27, 2005 7:37 pm
wow.

_________________
Image


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 3:18 pm 
Offline
User avatar

Joined: Sun Dec 18, 2011 3:29 pm
Interesting.


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 3:36 pm 
Offline

Joined: Sun Oct 04, 2009 5:06 pm
Location: Ridgefield, Connecticut
So what?


Kidding. I think this is really interesting as well. Awesome job with the reverse engineering.

Ben


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 3:43 pm 
Offline
User avatar

Joined: Wed Dec 10, 2008 6:26 pm
Location: Boston area
Very cool. I was wondering how these would operate since they appeared as computer generated images on your Shapeways shop. Now how can the principle be turned into a puzzle?...

_________________
Visit Pitcher Puzzles where you can buy the IPP award-winning RotoPrism 2, Fracture-10, and many, many more.


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 4:05 pm 
Offline
User avatar

Joined: Mon Aug 27, 2007 3:50 pm
Location: Copenhagen, Denmark
I want to see a Magic Gear Cube now :lol:

_________________
Tony Fisher wrote:
I believe it would work best with black plastic.

My puzzles in the Museum
My Website
My Youtube Channel


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 4:21 pm 
Offline
User avatar

Joined: Sun Mar 15, 2009 12:00 am
Location: Jarrow, England
Amazing, and very clever. Do you think this may have any practical applications in gear box designs?

_________________
My Shapeways Shop: http://www.shapeways.com/shops/gus_shop

Image


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 4:43 pm 
Offline

Joined: Tue Oct 13, 2009 1:13 am
Location: Saint-Petersburg, Russia
Fantastic!

Oskar,
You definitely should reuse this idea in your new gear puzzle.


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 8:27 pm 
Offline
User avatar

Joined: Fri Feb 18, 2000 8:50 am
Location: chicago, IL area U.S.A
This is by far the coolest thing I have ever seen in my whole entire life - by far!

As others have said, I would love to see this principle incorporated into a puzzle.

Well done as usual.

-d


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 8:58 pm 
Offline

Joined: Sat Mar 22, 2003 9:11 am
Location: Marin, CA
Is it possible to make a bevel or rack and pinion version of this?


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 9:02 pm 
Offline

Joined: Sun Mar 27, 2005 7:37 pm
Ok guys, you've seen a nice clear video with some funny shaped things but do you honestly fully understand how 3 gears can rotate in the same direction? If you say yes then could you actually explain it to someone else?

_________________
Image


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sat Mar 17, 2012 9:31 pm 
Offline

Joined: Sun Mar 27, 2005 7:37 pm
Watching it for the umpteenth time I finally get it (though not the rope explanation). Essentially the parts are sliding against each other rather than moving in conventional gear on gear action.

_________________
Image


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sun Mar 18, 2012 7:50 am 
Offline
User avatar

Joined: Sun Mar 15, 2009 12:00 am
Location: Jarrow, England
Tony Fisher wrote:
Watching it for the umpteenth time I finally get it (though not the rope explanation). Essentially the parts are sliding against each other rather than moving in conventional gear on gear action.
Gear on gear action - I've seen that video :shock:

_________________
My Shapeways Shop: http://www.shapeways.com/shops/gus_shop

Image


Top
 Profile  
 
 Post subject: Re: Magic Gears by OSKAR
PostPosted: Sun Mar 18, 2012 9:28 am 
Offline
User avatar

Joined: Thu Dec 02, 2004 12:09 pm
Location: Missouri
Tony Fisher wrote:
Watching it for the umpteenth time I finally get it (though not the rope explanation).
I get part of the rope explanation, I think. See this picture:

Image

Imagine you have the red rope attached to the circle at the green dot. The red rope is a fixed length and the rope can be pulled off the surface of the circle but not into it. You can see the purple dot at the loose end of the rope traces out the shape of the gear I've put green dashes on. I think this is the point Oskar is making. What I don't see is how the shape where the orange dashes is defined. And I also have no clue how one would go about making this shape in Solidworks.

Carl

P.S. This answers part of my question. http://www.youtube.com/watch?v=oNe-qSNv9VY

_________________
-
Image

Image


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 14 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

Forum powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group