The Counterintuitive Gear fidget MkII
$7.99
Sale price
$7.99
Regular price
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The Counterintuitive Gear fidget MkII
$7.99
Sale price
$7.99
Regular price
Bigger! More planets! Faster planets! Even more counterintuitive!
You probably have played with some planetary gears, they are cool stuff, especially those print-in-place herringbone ones. This “Counterintuitive Gear” model however has a double row of planets, which lead to some counterintuitive behavior:
| normal planetary gears | counterintuitive gears | |
| When you hold the ring and turn the sun gear, | the planets move in the same direction. | the planets move in the other direction. |
| When you hold the sun still and turn the ring, | the planets move in the same direction, but slower than the ring. |
the planets move in the same direction, but faster than the ring. With MkII's bigger sun gear the planets move even faster, nearly 2 rotations for one ring rotation. |
The hex holes should fit regular hexagonal pencils or the hand crank (I suggest using more than one).
The MkI (with smaller sun) can be found here.
Design by DrJones on MakerWorld (license: BY-SA).