how to install universal motorcycle tachometer

• 2022-04-16

If the line is broken, you can connect it. The turbine is broken and there are no accessories. It is recommended to replace it with a new one, which is not expensive This general master can't repair it, because the rotation of the speed line drives the coil in the instrument to generate a magnetic field and then drives the pointer to rotate. This is the only way to replace the instrument.

During the installation of motorcycle tachometer, the green line is up to 5261 iron connected to the rack, the black line is connected to the positive output of 4102 ignition switch, and the rest is generally black and red 1653 line connected to the pulse low-voltage line of large wire package. The tachometer reads the received digital pulse signal (sent by the sensor) directly into the counting port of the CPU after processing, calculates the speed and the corresponding position of the pointer through the software, and then amplifies it through the control port of the CPU to drive the stepper motor to rotate in the positive and negative directions and indicate the corresponding speed value (the pointer is directly installed on the rotating shaft of the stepper motor). The step of the stepper motor is only 1 / 3 degree. Motorcycle inductance tachometer has two wires connected to the tachometer. The inductive tachometer of motorcycle is basically installed on the front pulley of the engine to sense with the induction device of the engine body. The specific working principle is pulse wave. Each induction sends a signal degree. Generally speaking, when the vehicle starts, the engine speed will reach about 1200-1500 revolutions, which is because the low speed will lead to easy flameout when starting; When the engine working condition is normal, the engine speed will drop, generally about 800 rpm; When shifting gears, it is generally about 2000-2500 revolutions. At other times, as long as the engine speed is not too low or too high, do not stay in the red dangerous area for a long time, which will cause damage to engine parts.

In fact, the motorcycle tachometer is not expensive. Most scooters have no engine tachometer, only an odometer and a speedometer. They are controlled by the speed gear in the front wheel through the flexible shaft (meter line). Installing a tachometer is also convenient and cheap.