What is Harmonic damper?
A '''harmonic damper''' is a device connected to the free end of the [[crankshaft]] of an [[internal combustion engine]]. It is needed in engines with long crankshafts, such as [[Straight-eight engine|straight-8 engines]]. It is used on most engines to reduce [[Torsion (twist)|torsional]] vibrations that can occure at certain speeds. == Construction == The damper consists of an inner hub attached to the end of the crankshaft. A round [[mass]] is attached to the hub by an [[Elasticity (physics)|elastic]] material. This becomes a spring-mass-damper system. By selection of the damping material and the size of the mass, the damper can be made to quiet the torsional vibrations. The overall appearance is that of a thick disk. {{tech-stub}} [[Category:Motors]]