Get FREE SHIPPING on any order through Monday August 31

Looney Gears

Looney Gears 3d printed Turning slightly
Turning slightly
Looney Gears 3d printed Turning slightly
Looney Gears 3d printed Turning slightly
Looney Gears 3d printed
Looney Gears 3d printed
Digital Preview

Not a Photo

Looney Gears 3d printed Looney Gears
Looney Gears 3d printed Looney Gears
Looney Gears 3d printed Backside
Looney Gears 3d printed Backside
Looney Gears 3d printed Detail
Looney Gears 3d printed Detail
Looney Gears 3d printed Somsky Gears
Looney Gears 3d printed Somsky Gears
Looney Gears 3d printed Somsky Gears rotated
Looney Gears 3d printed Somsky Gears rotated
Looney Gears 3d printed 17+13+7=37, center
Looney Gears 3d printed 17+13+7=37, center
Looney Gears 3d printed 17+13+7=37, left
Looney Gears 3d printed 17+13+7=37, left
Looney Gears 3d printed 17+13+7=37, right
Looney Gears 3d printed 17+13+7=37, right
Looney Gears 3d printed 11+13+13=37, mid
Looney Gears 3d printed 11+13+13=37, mid
Looney Gears 3d printed 11+13+13=37, up
Looney Gears 3d printed 11+13+13=37, up
Looney Gears 3d printed 11+13+13=37, down
Looney Gears 3d printed 11+13+13=37, down
Looney Gears 3d printed
Looney Gears 3d printed
Digital Preview

Not a Photo

3d Model Viewer

About this Product

Looney Gears is a strange eccentric planetary gearing system. Whereas normal planetary gear systems are symmetrical, this one has no symmetry whatsoever.

This particular set of gears was the result of a challenge by Oskar to Andreas Röver in 2006. Andreas found this nice set of all-primary-numbers gears which is about 0.01% exact.

When Oskar made the Looney Gears, he made the conjecture that there do not exist exact solutions for this type of eccentric planetary gear systems. After seeing Oskar's video of Looney Gears, Bill Somsky proved that there are actually huge numbers of exact solutions for Looney Gears. These exact solutions are now called "Somsky gears". Somsky's discovery and proof showed that Oskar's conjecture (that there are no exact solutions) is wrong.

Watch the YouTube video of Looney Gears.
Watch the YouTube video of the Somsky Gears.
Watch the animation.
Read at the Shapeways Forum.
Read more at the Non-Twisty Puzzles Forum.

Please contact Oskar directly if you are interested in obtaining a fully colored and assembled sample of this puzzling object.
What's in the Box
INCM

Turning slightly
Looney Gears in White Strong & Flexible Polished
Width Height Depth
9 cm 5 cm 11.5 cm
This model is 3D Printed in White Strong & Flexible Polished: White nylon plastic polished to reveal a smooth matte finish.
Model version 2 | Last updated on 01/10/2015

Sign In or Join to comment.
 
 

Favorited by (9)

Logo

Hello.

We're sorry to inform you that we no longer support this browser and can't confirm that everything will work as expected. For the best Shapeways experience, please use one of the following browsers:

Click anywhere outside this window to continue.