Unformatted text preview: may differ, and the students will be able to explore them. For K s = 1 . 25, n d = 1 . 1, d = 14 in and D = 28 in, a polyamideA-5 belt, 8 inches wide, will do( b min = 6 . 58 in) 17-11 An efﬁciency of less than unity lowers the output for a given input. Since the object of the drive is the output, the efﬁciency must be incorporated such that the belt’s capacity is increased. The design power would thus be expressed as H d = H nom K s n d eff Ans . 17-12 Some perspective on the size of F c can be obtained from F c = w g ³ V 60 ´ 2 = 12 γ bt g ³ V 60 ´ 2...
View Full Document
- Fall '11
- Mechanical Engineering, Pulley, FC, Fc − Fc