An annular spur gear (1) mounted on shaft (A) has 120 teeth and drives a spur gear pinion (2) having 15 teeth mounted on shaft B. Compounded with gear (2) is a 75 tooth spur gear (3) which drives a 20 tooth spur gear (4) mounted on shaft (C). Mounted on the same shaft as gear (4) is a 144 tooth spur gear (5) driving a spur gear (6) which is mounted on shaft (D) which is co-linear with the axis of shaft (A). All shafts are parallel and in the same plane.
(a) Make a sketch of the gear train and identify components.
(b) If all the gears have the same diametral pitch determine the number of teeth on gear (6).
(c) If gear (1) is rotating at 10 rpm, determine the speed of gear (6).
(d) If all gears have a diametral pitch of 4, determine the distance between shafts (A) and (C).