113615, RE: Long rod engine.. aka RPM screamer.. Posted by vtcomp, Dec-31-69 06:00 PM
>Another point of contention is that long rod engines don't >really have much of an advantage in dwell time, and lose the >advantage of peak angle when it counts. > >The short rod engine puts the unit force vector closer to the >perpendicular to the crank at an earlier point then a long rod >engine. For example, in this simple drawing (MS Paint OWNS!): > >
This picture does a very good job depicting side load. Look at the rod angle compared to the cilinder wall at 90 for both engines.
|