*obscure, *geek

Adding video to channels (Geek, Obscure) - requested by Zawash.

I like this but I deduct points because the planetary helical gears aren't even meshing teeth with the inside of the large gears. They're just rolling along...

When I was in Grade 6 at the very end of spring semester, I'm damned sure one of these fuckers was in the classroom clock.

He would have a better demonstration if he used a cordless drill in place of the crank handle. It would lose the wobbly-ness of the action

Ahhh, but that's part of the beauty of the thing. The grinder gears, as they're called, are just one outer ring of n gears and one inner ring of n-1 gears. The pressure of the planetary gear causes rotation of the grinder gear by meshing one notch over each full rotation. It's an incredible increasing of the gear ratio. I believe in the video he says 1 : 17,000.