A cable drum for a crane is to rotate between 160 and 166 rpm. Design a gear drive for 25 hp in which the input pinion rotates at 925 rpm and the output rotates with the drum. The crane is expected to operate with a 50% duty cycle for 120 hours per week for at least 10 years. The pinion and the gear drive must fit within the 24-in inside diameter of the drum, with the gear mounted on the drum shaft. Assume that a number of pinion teeth, Np=17 and rim thickness factor (KB), a service factor (SF) and a reliability factor (KR) are equal to 1.00 for both pinion and gear. Perform stress analysis (bending and contact) for both pinion and gear and determine required hardness (HB) values.