What Causes the Central Shaft to Make Noise?
2 Answers
Central shaft noise may be caused by water or dirt entering the area. It is normal for most vehicles to develop a rhythmic noise in this area after a few months of driving. Below is an introduction to the central shaft in automobiles: Definition: The central shaft in a car is the rotating component installed in the bottom bracket of the frame, connecting the left and right cranks. Common types in sports vehicles include square taper, splined, and integrated designs. Function: The central shaft connects the primary and secondary shafts, allowing the selection of different gears through the gearshift lever to enable the secondary shaft to output varying speeds, directions, and torque.
I recently encountered a similar issue. While driving on the highway and taking a turn, I heard a rattling sound that startled me. Upon inspection, I found that the driveshaft near the center axle was loose, or the universal joint might have worn out—these parts tend to loosen over time. It could also be due to bearing damage or minor suspension system issues, like loose chassis bolts. The abnormal noise is usually more noticeable during acceleration or braking. I think it's worth taking a quick look yourself—peek under the car for any oil stains or rust—but don’t attempt forceful repairs; safety comes first. If the noise persists, it could worsen and lead to bigger failures, so it’s better to visit a repair shop promptly and let a technician diagnose it with a stethoscope. Remember, regular maintenance of the drivetrain can extend its lifespan—don’t wait until the noise gets worse to address it.
