Gear Ratio Model
thingiverse
Basic introduction to gears and gear ratios. This set of gears, crank, expandable base, and several spinners can be used to demonstrate the anatomy of a gear, how gears mesh, and visualize different gear ratios. Print: 1 (or more) 11-hole base 2 (or more) feet [standard or expansion] 1 (or more) of <b>each</b> gear 1 crank 1(or more) spinner Special thanks to b2vn (and Randall Munroe!) for the excellent xkcd character models. For more nerd fun, go to: https://xkcd.com/ **UPDATE 9/25** - Added expansion foot - this will allow you to connect as many bases as you'd like for even more gear fun! (Note: expansion feet won't interfere with each other, so go nuts.) - Added more spinners, including an arrow to help demonstrate rotation/counter rotation of gears. - Updated crank
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