Honda CM400A - Operating Principle of Balancer

HONDA
TECHNICAL FEATURES
CB40OT
OPERATING PRINCIPLE OF BALANCER
t INERTIA FORCE AT TDC
1 INERTIA FORCE AT BDC
The source of vibration in a reciprocating engine is the "inertia" force created by the rotating or reciprocating masses. For
example, the inertia force which acts on the main bearings of
a single cylinder, Ccycle. 200 ccengine at TDC will be:
400 kg
1 882 lbs) approx. .............. at 6.000 rpm
1000 kg (2.205 lbs) approx. .............. at 10.000 rpm
+/INERTIA FORCE
INERTIA FORCE
ON CRANK WEIGHT
Inertia force created by the rotating mass
is general canceled by counterweights. Their use will reduce vibration caused by
the primary inertia force which occurs once every crankshaft revolution.
(Hereafter, inertia force refers to this primary inertia force).
18-2
Date of Issue: September, 1977
Q HONDA MOTOR CO.. LTD.