What Causes Difficulty in Shifting Gears on a Underbone Motorcycle?

1 Answers
LaLaila
07/25/25 2:12pm
Underbone motorcycle gear shifting difficulties can be attributed to the following reasons: Hardware Issues: Excessive or damaged buffer block gap, or a chain that is too long or has excessive play. These hardware problems can cause intermittent power transmission from the engine, leading to abrupt and jerky sensations. If hardware issues are confirmed, promptly replace the relevant parts, as this not only affects comfort but also relates to safety. Improper Rider Operation: Holding the clutch lever for too long during gear shifting. When the clutch lever is engaged while shifting, the bike is in a coasting and decelerating state. If the clutch lever is not released promptly after shifting, the gear is higher while the speed decreases, causing a mismatch between the engine crankshaft speed and the actual speed, resulting in jerking. Failure to Apply Throttle Promptly After Shifting: If the rider returns the throttle to the starting point after releasing the clutch lever without applying throttle promptly, the engine crankshaft speed will not match the actual speed, leading to jerking. Similarly, excessive throttle after shifting, followed by releasing the clutch lever while the engine crankshaft speed is high but the actual speed is low, will also cause jerking.
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