Bent Rear Derailleur Hanger

A common cause of a misaligned hanger is from the bike falling over to the right side.

Bent rear derailleur hanger.

Refer to your cellphone photos from step 3 if needed. This is because there is very little stress from riding the bike or shifting gears. If the bolt for the derailleur mount gets bent you won t be able to thread your tderailleur back into the hanger. The derailleur hanger is the mounting point for your rear derailleur and almost all are designed to be sacrificial parts that will bend or snap in a crash or sometimes even if your bike just falls.

These are commonly aluminum but may also be steel. What usually happens even a perfectly straight derailleur hanger won t fix things with a bent derailleur. Reinstall your rear derailleur paying attention to its bracket stop and how it mounts on the hanger. Next make sure to not over torque the rear derailleur as this could misalign the hanger again.

The hanger is designed to be pliable enough to bend during a crash preventing damage to more expensive parts. Bent hanger t he rear derailleur is attached to the frame with a hanger. The derailleur hanger is the piece of metal that the rear derailleur attaches to near the rear axle. Sometimes the derailleur gets bent a little as well.

If the tool has now separated from the rim push it gently towards the wheel until the hanger is bent permanently back into line. This pushes the derailleur body inward bending the hanger. Bent derailleur hanger if your rear derailleur is shifting poorly not staying in gear and appears to be bent or out of alignment check first whether the derailleur hanger is bent. It can be helpful to take photos with your cellphone to ensure the rear derailleur is reattached in the correct position.

It is often possible to repeatedly re bend many derailleur hangers. Since it s not recommended to try and straighten out the derailleur itself it means that you need to bend the derailleur hanger the way to fit with a bent derailleur. Check again in the 6 o clock position and repeat until the tool is.