What is the reason for the pinko gear jam in the motorcycle speedometer?
2 Answers
Motorcycle speedometer pinko gear jam may be due to lack of lubrication in the bearings. Introduction to the speedometer: The function of the motorcycle speedometer is to display changes in driving speed, including the instantaneous speed of the vehicle, the engine speed, as well as the accumulated mileage. Driving speed is usually indicated by a pointer that constantly changes while driving. Other information is typically displayed using rolling numbers similar to those on an electric meter. Working principle of the speedometer: When the vehicle is in motion, the drive shaft rotates the permanent magnet, whose magnetic field induces eddy currents in the aluminum cup. The interaction between the eddy currents and the magnetic field of the permanent magnet generates torque that overcomes the spring force of the spiral spring, causing the aluminum cup to deflect in the direction of the permanent magnet's rotation. As a result, the aluminum cup turns the pointer by a certain angle.
I haven't been riding motorcycles for long, but I've encountered the speedometer gear getting stuck several times, mainly because I've been too lazy to do maintenance. Dust and mud accumulate inside, and over time it gets stuck and won't move. Especially after riding in the rainy season, road debris splashes into the drive system, making it more prone to happen. Last time I opened it up myself, there was a bunch of black, greasy sludge clogging the gear gaps, and cleaning it was a real hassle. Now I've learned my lesson—after every ride, I simply wipe down the gear area and use some lubricant spray as prevention. This method has saved me a lot on repair costs, so don't wait until there's a problem to deal with it. Remember, keeping it clean is key.
