Tachometer

Motorcycle Tachometer is an instrument that measures the speed at which an engine shaft is rotating. The reading is usually in terms of revolutions per minute. A motorcycle tachometer is similar with a speedometer in many ways, like construction and operation.

Types of Motorcycle Tachometer
Generally, there are two types of motorcycle tachometers. They are:

• Contact Type
• Non-Contact Type

Tachometers used in automobiles are similar with the speedometer in terms of construction and operation. There is also another type of tachometer which is often connected directly to the shaft of whose speed it indicates. They are small electric generators whose voltage output, which is proportional to speed, is applied to a voltmeter whose dial is adjusted in speed units.

There is yet another type of electrical tachometer which operates by counting the pulses of current or voltage in the ignition system. Electrical tachometer work only for engines which have ignition system. The readout of a electrical tachometer is usually in the form of an analog dial. But the digital display types are gaining popularity.

Maintenance of Tachometer
Though motorcycle tachometers requires minimum maintenance, when there is an erratic output signal that results in unstable velocity control, they should be checked.