A. Objects of the long axis type mounted on parallel supports. The heavy spot, as denoted here by the black dot, causes the object to be both statically and dynamically unbalanced. See All 17 Photos B ...

When it is powering a race car--with all the rumbling, vibrations,beating, and banging going on--it can sometimes be easy to forget thatthe engine is a precision piece of equipment. In the hands of ...

Shaking engines aren’t desirable, so we try to remove these forces. It’s easy to understand that as the piston comes to the top and stops, it sends an upward force, called a primary force.