If we use less OR more nos. of V-belts compare to recommended by blower manufacturer, what will be the effect in terms of operating life of belts, power transmission, motor power, efficiency of motor, etc.|||More HP, more belts. They only make V-belts of a certain size, so you can't keep going up in size of belts. So if you have to transmit more HP than one belt can handle, you add more belts. You may get a little more life out of the belts by using more of them, but the hassle of canging one belt if it breaks offsets any cost savings in life of belt...belts are cheap, labor is expensive.
The motor HP determines how many belts you will need, so you've got that backwards. It makes little or no difference on motor effciency.
If you use less belts than reccomended by Mfg., they will break, not slip. They only slip if they are not adjusted correctly.|||Were you to use four belts when the manufacturer has recommended that you use five, there would be a tendency for the four belts to slip, thus reducing the efficiency of the motor-fan set. To stop the belts from slipping, you could tighten them but this would put pressure on the bearings of the fan and the motor. In either case, the belts would wear. Were you to use ten belts, you would simply be wasting belts and energy.
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