Question: Why Does My Bicycle Chain Keep Coming Off?

Why does my kids bike chain keep popping off?

I suspect the same culprit for both these bikes: The nuts holding on the rear axle have gotten loose, causing the wheel to slide forward. This shortens the distance between the pedals and the wheels, so the chain stays loose and falls off. If you got it at a bike shop, the staff should handle it for free.

Why does my chain keep coming off my cruiser bike?

Your rear wheel is positioned too close to the chainring. If this is the case, your chain will not remain tight and thus slip off. There could be dirt or grime in your chain that will cause it to slip or fail. Dirt can disrupt the normal functioning of the chain.

Why does my chain keep dropping?

Sometimes the lower pulley (called the idler pulley) will be misaligned with the chain. Since its job is steering the chain correctly, when it gets bent, it can cause the chain to drop. The easiest way to see this problem is to stand behind the bicycle as someone else shifts through all the gears.

How do you change gears on a bike?

To operate the shifters you push the lever sideways until you hear a click. For most mountain and hybrid style bikes with flat bars, you shift the gears by using set paddles that you operate with your thumb. Some bikes operate with “grip shifters”, or a dial that is located to the inside of where you place your hands.

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