What is a balanced engine? Why do you want a balanced engine? An engine has uneven forces from rotational mass, reciprocating mass, and firing intervals. To balance the engine, we need to balance out ...

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.

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. D. Long axis object ...