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Paradoxical Gears, orig. by Jacques Maurel

by Ushanka, published

Paradoxical Gears, orig. by Jacques Maurel by Ushanka Feb 18, 2012

Description

There's this great set of gears on the following site: jacquesmaurel.com/gears

I couldn't find models for them online, so here's my take. It's just an AutoCad DXF of an involute curve, extruded in OpenSCAD.

The 1- and 2-tooth gears mesh beautifully, though I have not tried motorizing them. I'm currently out of filament so I haven't tried the 3-tooth gear yet :(

Recent Comments

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Thanks for the posts, I've updated the link in the description. The video you've linked to shows the gears operating normally, that is, one is moving clockwise and the other is moving counterclockwise. This video shows the "paradoxical" motion that is so appealing: http://www.youtube.com/watch?v...

The page has moved to http://www.jacquesmaurel.com/g...

Jacques youtube video on the subject:
http://www.youtube.com/watch?v...

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Instructions

I was nearly out of plastic, so I made these with 0% infill and just stopped them 2-3 layers below the top, resulting in the shot-glass-like shapes shown here. Put some stiff bars through the holes, let them spin! Extra fun.

Comments

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Jaknil on Jan 31, 2013 said:

The page has moved to http://www.jacquesmaurel.com/g...

Jaknil on Jan 31, 2013 said:

Jacques youtube video on the subject:
http://www.youtube.com/watch?v...

Ushanka on Feb 6, 2013 said:

Thanks for the posts, I've updated the link in the description. The video you've linked to shows the gears operating normally, that is, one is moving clockwise and the other is moving counterclockwise. This video shows the "paradoxical" motion that is so appealing: http://www.youtube.com/watch?v...

qharley on Feb 18, 2012 said:

SCAD source please?

Ushanka on Feb 19, 2012 said:

Good point, those have been uploaded too, in the .zip file.

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