Replace A Bike Dropout

Introduction

The gear hanger, or bike dropout is a small tab of metal on the drive side of the bike near where the rear wheel is anchored in the frame. It is easily bent in a crash. If the frame is made of aluminium it's not possible to bend it back safely. To avoid writing-off a whole frame in a minor fall aluminium frames for derailer bikes have gear hangers that can be detached and replaced.

Step 1

<h3>Step 1</h3><p>Remove the back wheel.
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Detach Wheel

Remove the back wheel.

Step 2

<h3>Step 2</h3><p>Unscrew the rear derailer from the bike dropout. It may be easier to dismount the gear-cable before you do this.
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Unscrew

Unscrew the rear derailer from the bike dropout. It may be easier to dismount the gear-cable before you do this.

Step 3

<h3>Step 3</h3><p>Unscrew the bolt, or bolts, that hold the bike dropout to the frame.
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Remove Bolts

Unscrew the bolt, or bolts, that hold the bike dropout to the frame.

Step 4

<h3>Step 4</h3><p>There are many different shapes of replacement hanger so you need to keep the old one for reference. A good place to start is the shop where you bought the bike, or a dealer who sells the same brand of bikes. It’s also helpful if you know the year, make and model of your frame.
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Type Of Bike Dropout

There are many different shapes of replacement hanger so you need to keep the old one for reference. A good place to start is the shop where you bought the bike, or a dealer who sells the same brand of bikes. It’s also helpful if you know the year, make and model of your frame.

Step 5

<h3>Step 5</h3><p>Once you have a replacement bike dropout bolt it on in the same position.
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Replace

Once you have a replacement bike dropout bolt it on in the same position.

Step 6

<h3>Step 6</h3><p>Screw the rear derailer into the bike dropout.
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Re-mount Derailer

Screw the rear derailer into the bike dropout.

Step 7

<h3>Step 7</h3><p>Remount the gear cable.
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Remount the gear cable.

Step 8

<h3>Step 8</h3><p>Replace the rear wheel in the bike.
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Replace the rear wheel in the bike.