Gears and chains are two crucial components in a motorcycle’s drivetrain. Without them, power from the engine cannot be transmitted to the rear wheel. As a result, the motorcycle cannot move. Because of their vital role, it is crucial for vehicle owners to understand worn motorcycle gears.
Worn Motorcycle Gears Pose a High Risk to Riders
Generally, gears transmit rotation from the transmission to the rear wheel. The chain connects the front gear (gearbox) and the rear gear (wheel). These two bike components must work in sync and precisely for the motorcycle to run smoothly and efficiently.
However, because they are constantly working under high pressure and exposed to dirt, they are susceptible to wear and damage. If left untreated, this damage can reduce motorcycle performance and even endanger the rider.
Causes of Rapid Gear and Chain Wear
Several factors cause rapid motorcycle gear and chain wear. First, poor material quality is a significant factor. If components are used with less durable materials, they will wear out more quickly.
Additionally, excessive use is also a common cause. Continuous use of a motorcycle without breaks puts the gears and chain under heavy stress, accelerating their wear.
Lack of lubrication also contributes significantly. These components require regular lubrication to prevent friction from generating excessive heat, which can damage the gear and chain surfaces.
Improper chain tension, whether too tight or too loose, can cause uneven pressure on the gears and accelerate wear. Equally important, neglecting routine maintenance will further exacerbate the problem. Furthermore, accumulated dust, mud, or water will cause rust if not promptly cleaned.
Signs of Worn or Problematic Gears and Chains
Before replacing them, it’s important to understand the characteristics of worn gears in motorbike. The first easily visible sign is rust. Rust indicates that the metal surface has oxidized and its strength has begun to decrease. If not promptly cleaned or replaced, rust can cause the component to break during use.
Another sign is a change in the shape of the gear teeth. They usually become sharper or pointier at the ends. These teeth form due to the constant friction between the chain and gears during use.
Besides physical signs, signs of damage can also be identified by the sound the motorcycle makes when running. If you hear noise, squeaking, or abnormal sounds, especially when driving or accelerating, it’s likely due to gears or chains that are no longer working precisely. Worn chains also often become loose and difficult to adjust. In some cases, users may even have to cut the chain to adjust it.
Beyond noise, unusual vibrations can also be an indicator of a problem with the gears or chain. These vibrations occur because the gear teeth are no longer working properly. This can spread to other parts of the motorcycle and cause additional damage.
In severe cases, wear can cause excessive heat in the area around the chain. This heat is generated by increased friction between already-unsmooth components, and if left untreated, can cause damage to other components such as the electrical wiring or transmission system.
Ultimately, the motorcycle’s overall performance can decline. Pulling becomes heavy, speed becomes unstable, or a “stuttering” feeling occurs when driving. All of these indicate that power transfer from the engine to the rear wheel is no longer optimal, and the cause is most likely worn gears and chain.
Repair and Maintenance
If you see the signs of wear mentioned above, you can take several steps. As shown in the short video by @Jk18Clicks, regular checks are necessary every 1,000 km or at least once a month. Pay attention to the shape of the gear teeth and check for looseness or rust. If so, disassemble and clean them using a chain cleaner or mild motorcycle soap. Once dry, spray chain lube evenly. Avoid using used oil or other lubricants, as they can cause dirt buildup.
Next, adjust the chain tension, ideally, press the chain up and down 2-3 cm in the center of the chain. Use the swingarm adjustment wrench to adjust the tension. If the gear teeth are very sharp or the chain is stretched, it’s best to replace the entire set (front sprocket, rear sprocket, and chain) for best results.
Gears and chains are crucial motorcycle components that are often overlooked. Worn motorcycle gears not only reduce riding comfort but can also be a safety hazard. Understanding the causes, signs of damage, and how to repair them will make it easier.
