Over-tensioning shortens not only the life of V-belts but also that of the sheaves, electric motor, and driven equipment bearings. In extreme cases, it can even bend or break a motor shaft.

For many of its contemporary motorcycles, Harley-Davidson has mostly turned to belt drive systems — a design choice that often begs questions among riders accustomed to the conventional clatter of ...

Not everything on a modern muscle car is better just because it’s a newer design, but one innovation certainly is better, and that’s serpentine accessory drive systems. Why? Well, the old V-belt setup ...