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+//(Chain Drives) Example 14.3
+//Power rating of electric motor kW
+kWd = 5
+//Speed of the motor n1 (rpm)
+n1 = 1400
+//Speed reduction i
+i = 3/1
+//Centre distance a (mm)
+a = 500
+//Number of teeth on the driving sprocket z1
+z1 = 21
+//Change the following data accordingly
+//Find service factor for moderate shock conditions from table 14.3 on page 551
+Ks = 1.3
+//Find multiple strand factor from table 14.4 on page 551
+//For 1 strand
+K1 = 1
+//Find the tooth correction factor from table 14.5 on page 551
+//For 21 teeth
+K2 = 1.26
+//After choosing the chain, alter following data accordingly from table 14.2 on page 550
+//pitch p (mm)
+p = 12.7