Ketjunpysäytyksen

Ketjunpysäytyksen is a Finnish term that translates to "chain stoppage" or "chain arrest" in English. It refers to a phenomenon in cycling where the bicycle chain becomes jammed or stuck, preventing the pedals from turning and the bicycle from moving forward. This can occur due to several reasons, including the chain derailing from the sprockets, debris getting caught in the drivetrain, or mechanical failure of the chain or other components.

When a ketjunpysäytyksen happens, the rider typically experiences an abrupt halt in pedaling. The chain might lodge itself between the chainring and the frame, or it could get caught in the rear derailleur or cassette. The immediate consequence is a loss of propulsion, and in some cases, it can cause the rider to lose balance or even fall, especially if it occurs at speed or during a critical maneuver.

Addressing ketjunpysäytyksen often involves stopping the bicycle and inspecting the drivetrain. The rider may need to manually clear any obstructions, realign the chain, or even re-thread it onto the sprockets. In more severe cases, a damaged component might require repair or replacement. Regular maintenance, such as cleaning and lubricating the chain and ensuring proper adjustment of derailleurs, can help prevent occurrences of ketjunpysäytyksen. It is a common issue that many cyclists encounter at some point.