图 上游久通大学 in 圆上泽支大学 Simple Gear Trains N2 Maximum gear ratio of 1:10 based on size constraints; A N3 Useful for changing direction; Gear ratios cancel each other out; NA Also Could change direction with belt. 5 @out Nz N.NaN5m A N3 N4 Ns N6 N2Om 2N6 6 食N6 33 Simple Gear Trains  Maximum gear ratio of 1:10 based on size constraints;  Useful for changing direction;  Gear ratios cancel each other out;  Also Could change direction with belt. in out in ω N N ω N N N N N N N N ω 6 2 6 5 5 4 4 3 3 2  