54 Thousand Year Gearbox

A response to 3D Printer Academy's video "How long will it take for the last gear to spin?" from Aug 28, 2021. I remixed the gearbox to use a small attached DC motor running off a 9v plug.

Using a gear ratio of 70,368,744,177,664 : 1 and a speed of 2450rpm my math puts the time it would take the last gear to make one revolution at well over 54 thousand years (54,645). And just one tenth of a gram of pressure turning the first gear could lift over 1.5 billion pounds, it would just take several millennium to move a couple of millimeters.

My math skills are about as sharp as my speeling skills so please feel free to correct me in the comments.

Video: https://www.youtube.com/watch?v=Yptdn9u-Ih8

Requires:

Two 8mm rods cut to length

Motor (https://www.amazon.com/gp/product/B07Q44YYKG)

And a power source

Print Settings

Printer Brand:

Creality

Printer:

CR-10S

Rafts:

No

Supports:

No

Resolution:

300

Infill:

20%

Filament: Generic PLA Any How I Designed This ===================