What may be the cause of the need to frequently adjust the tension of the drive chain of the motorcycle?
Show the correct answer
Correct answer
C. If you often accelerate abruptly.
Explanation
In the photo, there is a close-up of the drive chain and the tensioner at the end of the motorcycle's swingarm. The need to adjust the chain tension more often is caused by frequent sharp acceleration - answer C.
The Road Traffic Act requires a vehicle to be kept in a condition that does not endanger safety, and a chain stretches faster the greater the forces pulling on it. During sharp acceleration, the full torque of the engine jerks the chain, the pins and bushes of the links wear, and their combined play makes the chain longer - hence the need to tighten it more often. Starts with the front wheel lifted, riding with a passenger and luggage, and a lack of lubrication have a similar effect. High speed alone on a straight road (answer A) loads the chain evenly and does not stretch it as much as jerks do; riding at low speed (answer B) loads it the least. A stretched chain skips on the sprockets and can come off, locking the rear wheel, which is why you check the slack regularly, and you replace a chain that can no longer be tightened within the range of the tensioners together with the sprockets.
Legal basis: Art. 66 para. 1 point 1 of the Road Traffic Act (Prawo o ruchu drogowym)