The gear train shown in the figure has an input (gear 1) with a power of 3 hp and a speed of 200 rpm, the diametrical pitch of the blue gears is 12 and that of the yellow gears is 21, and the angle formed between the axes of gears 2-3 is 45° and the contact angle is 20°. Considering the following parameters for the gears.

Calculate:

1. Distances between centers of all gears.
2. Contact relationship between all pairs of gears.
3. The forces in the axes of the gears.
    

 

a b Z Z Z3 Z4 Z5 60 40 15 75 25 57 25 2 b 3 a 4 5 01