Pipmeister
Senior Retro Guru
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Has anyone found a way to “repair” the extraction threads in a Square Taper type Crank?
I have managed to remove a Crank with stripped threads from a bike by bolting a drift onto the exposed Non-Drive Side Bottom Bracket cartridge. I then managed to pull the Crank from the Bottom Bracket taper by using a blow torch on the Crank, and freezer spray on the axle, while utilising the very last of the knackered threads that were still hanging on in there.
It seems a shame to chuck the Crank away, so does anyone know of a solution?
The tapers are fine, so I can easily fit the crank again, but when it’s time to change an inner Chain Ring, or the Bottom Bracket, I will be stuck with an even more challenging removing performance than this time.
Pip.
I have managed to remove a Crank with stripped threads from a bike by bolting a drift onto the exposed Non-Drive Side Bottom Bracket cartridge. I then managed to pull the Crank from the Bottom Bracket taper by using a blow torch on the Crank, and freezer spray on the axle, while utilising the very last of the knackered threads that were still hanging on in there.
It seems a shame to chuck the Crank away, so does anyone know of a solution?
The tapers are fine, so I can easily fit the crank again, but when it’s time to change an inner Chain Ring, or the Bottom Bracket, I will be stuck with an even more challenging removing performance than this time.
Pip.