A simple 1 to 9 ratio gearbox

A simple 1 to 9 ratio gearbox

thingiverse

This gearbox is designed to be as simple as possible yet usable to allow fine adjustments on a rack gear. The gearbox consists of three gears and two knobs, providing a 1 to 9,7 or 1 to 3,3 gear ratio depending on the knob used.The simple gearbox on github

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