1. Remove the cassette, broken spoke and tyre
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A broken spoke is relatively to fix with the right tools
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A chainwhip holds the cassette in place while the wrench and cassette tool is applied to remove the lockring
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Remove the rim tape to gain access to the spoke nipples
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Be extremely careful when placing the nipple in the rim
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Use a spoke key to bring the replacement spoke up to tension
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Ensure the spacers are replaced correctly before tightening the lock ring
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Check the function of the brake and the gears when replacing a trued wheel
1. Remove the cassette, broken spoke and tyre
If it is the rear wheel driveside that needs a new spoke, the first step is to remove the cassette – doing so while the tyre is still in place.
Unscrew the quick release and remove. Insert the cassette removal tool, apply the wrench to it, and apply the chain whip to the cassette.
A chainwhip holds the cassette in place while the wrench and cassette tool is applied to remove the lockring.
Apply pressure to the chain whip in a clockwise direction and turn the wrench anti-clockwise.
Pull the broken spoke from the hub flange. It’s possible, but not essential, to trim the spoke with cutters to reduce the length necessary to pull from the hub.
Jon then removes the tyre after removing the cassette. “The tyre gives you some purchase when applying pressure to the chain whip and wrench,” he says.
The tyre will absorb the pressure applied when removing the cassette more effectively than the rim, which could be damaged if placed against the workshop floor.