What happened to the bicycle chain?

Make sure that the chain engages with the rear gear. Clamp the chain on several buckles under the front gear, lift the rear wheel, hold the brace and turn it clockwise. After the chain is installed, you can ride it.

Chain dropping is common in single-speed bicycles, but rare in variable-speed bicycles. However, the chain loss of variable-speed bicycles is generally due to poor speed adjustment, and it is also possible to shake the chain through bumpy roads when the speed is relatively fast. As for the chain loss caused by the car accident, I won't say it.

Chain: Chain, also called cart chain and roller chain, is installed on the coupling wheel and flywheel. Its function is to transfer pedal force from crank and sprocket to flywheel and rear wheel to drive the bicycle forward. Sprocket: made of high-strength steel to ensure the required tension.

Extended data:

Bicycle repair method

1) In general, the chain is separated from the front flywheel. In order to prevent the lubricating oil on your hands from being washed off easily, you should wear gloves first.

2) Hold the pedal with the right hand to fix the front flywheel, and straighten the chain with the left hand to mesh with the front flywheel.

3) Try to turn the pedal forward until the chain is fully engaged with the front flywheel, so that the chain is repaired.

4) If the car chain often drops, it may be because the car chain is loose or too long. You can tighten or remove one or two sections.