Continue Prob. 13–24 by finding the following information, assuming a diametral pitch of 6 teeth/in.
(a) Determine pitch diameters for each of the gears.
(b) Determine the pitch line velocities (in ft/min) for each set of gears.
(c) Determine the magnitudes of the tangential, radial, and total forces transmitted between each set of gears.
(d) Determine the input torque.
(e) Determine the output torque, neglecting frictional losses.
Prob. 13–24, A gearbox is to be designed with a compound reverted gear train that transmits 25 horsepower with an input speed of 2500 rev/min. The output should deliver the power at a rotational speed in the range of 280 to 300 rev/min. Spur gears with 20◦ pressure angle are to be used. Determine suitable numbers of teeth for each gear, to minimize the gearbox size while providing an output speed within the specified range. Be sure to avoid an interference problem in the teeth.