Balancer shaft for two cycle engine

摘要

A balancer shaft arrangement for a two cycle, crankcase compression, internal combustion engine wherein the balancer shaft is driven from the crankshaft and is disposed below the crankcase and externally of it. The balancer shaft is driven from end of the crankshft and a flywheel is driven at the other end of the crankshaft. The balancer shaft axis is disposed at a lesser distance from the crankshaft axis than the radius of the flywheel so as to provide a compact assembly.