Paradoxical gears and Hobson coupling

[Electricsteam]

I trid the Hobson it does NOT work with any sort of force or well anything I put a motor to one end and one of those tiny pumps on the other the Hobson stopped working about 5 second in

[aeh5040]

I trid the Hobson it does NOT work with any sort of force or well anything I put a motor to one end and one of those tiny pumps on the other the Hobson stopped working about 5 second in

As I said, it can actually handle moderate torque, although that certainly requires proper bracing of the supports.

[Electricsteam]

hrm Okay I lied a little the pumps filled the tank until it hit about 20 PSI on the dial then It had trouble and broke itself

[John Daniels]

Please show us!

Here we go;

This really is mesmerizing to watch. My father absolutely loves it.

Is that even possible?

In the width and length departments, yes. And it still runs rather smoothly.

[aeh5040]

Here we go;

Nice! i like the minimalist bracing too!

[John Daniels]

Nice! i like the minimalist bracing too!

Thank you! I rather like it as well. :)

[LucyCol]

Quick poll: how many people watched these and immediately built one or the other?

That would be me, showed it to the other half who was also amazed.

Edited December 7, 2015 by LucyCol

[Kman860]

Here we go;

*snip*

*snip*

This really is mesmerizing to watch. My father absolutely loves it.

In the width and length departments, yes. And it still runs rather smoothly.

IIIIII LIKE IT!!!!

[andrewganschow]

Ok. I have a correction to make to my earlier post,with the help of sariels gear calculator, with a 5:1 ratio, a 40 tooth gear driving an 8 tooth, and fresh batteries my hobson coupling is turning at 1360 rpms. I've grinding corkboard with it now. This drink coaster will be gone in no time.