https://it.mathworks.com/help/sdl/about-gears-clutches-and-transmissions.html?s_tid=CRUX_lftnav
Transmissions with Gear Ratios and Clutch Schedules - MATLAB & Simulink
Complex, switchable gearboxes that contain gears and clutches
gear ratiostransmissionsclutchschedulesmatlab
https://research.vu.nl/en/publications/handcycling-different-modes-and-gear-ratios/
Handcycling: Different modes and gear ratios - Vrije Universiteit Amsterdam
gear ratiosvrije universiteithandcyclingdifferentmodes
https://scholarworks.iu.edu/dspace/items/e976b564-d6b0-4854-9bdd-115ad1f8fdf7/full
Calcaneum gear ratios for North American carnivorans
These data consist of gear ratio measurements of the calcanea (ankle bones) of all living North American mammal carnivore species and selected extinct species...
gear ratiosnorth americancarnivorans
https://how-im-doing-the-etape-du-tour.blogspot.com/2014/07/oh-dear-lord-what-have-i-done-gear.html
I'm somehow riding the Etape du Tour... again: Oh dear lord what have I done... Gear ratios for the...
We're trying to train to be good enough to complete the 2013 Etape du Tour and ride a stage of the Tour de France. This is how we're getting on
https://pubchem.ncbi.nlm.nih.gov/patent/EP-0391773-B1
System for driving a shaft in rotation with two gear ratios, especially for a steering column of a...
EP-0391773-B1 chemical patent summary.