00:00 Intro 00:35 Motorcycle and car applications and firing intervals 05:00 Acceleration, Velocity and Force 07:58 Primary balance and vibrations explained 12:22 180° and 360° twins primary balance ...

It has come to our attention that many of the top drag racing builders are overbalancing their engine assemblies. Basically, this is done to help high-rpm out-of-balance conditions and generate longer ...

When you consider the crazy monkey motion of reciprocating internal combustion engines it is remarkable they work as well as they do. You have eight pistons and connecting rods doing a “do-si-do” ...

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. B. Heavy spot added ...