What is the engine speed of a motorcycle?

1 Answers
SanSienna
07/30/25 3:05am
Motorcycle engine idle speed is 1400 (±100) RPM. Most domestic motorcycles have a maximum speed between 7,000 and 9,000 RPM. Some domestic motorcycles can reach up to 11,000 RPM. Tachometer working principle: Electronic tachometers utilize electromagnetic principles: a piece of iron is connected to the needle, surrounded by an electromagnetic coil. The electromagnet has three wires: positive, negative, and the high-voltage pack input wire, which is the engine's ignition wire. Each time this wire discharges, the engine ignites once, meaning the engine rotates twice. Based on this principle, every time the electromagnet is energized, it magnetizes once. The faster the rotation, the stronger the magnetic force, causing the needle to move upward. Mechanical tachometer: Mechanical tachometers use a flexible steel wire connected at one end to the engine and the other end to the instrument panel. The engine's power drives the rotation of the flexible wire. Inside, there is a circular magnet with a bowl-shaped iron disk attached to it, and the needle is mounted on the disk. The faster the rotation, the quicker the magnetic force moves the iron bowl. The principle of the mechanical tachometer is the same as that of the odometer on the left.
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