Extreme Gear Ratio Machine - Free Building MOC Instructions
This compact mechanism may look simple at first glance, but it hides a seriously wild chain reaction inside. Built as a multi-stage gear setup, each section increases the speed 5x, creating an extreme overdrive ratio of 1:625 by the final stage.
That means every turn at the input sends the last axle spinning at an insanely fast rate 
But of course, there’s a catch…
The faster the system gets, the more resistance builds through the mechanism, and the harder it becomes to keep turning it smoothly. What starts as a satisfying mechanical demonstration quickly turns into a real test of friction, stability, and part limits.
Designed by Dr.Engine
Instructions by How To Build It
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