Were you turning left? Based on the way the splines at the top have shifted to the left, **it sure looks that way.**
The drive side of this bottom bracket is left-hand threaded. That means you have to turn to the right to loosen.
In any case, you are probably getting into destructive removal at this point. It’s gonna be a journey – one probably better left to a pro.
otismcotis on
Were you trying to loosen the drive side counterclockwise? If you it might not have been seized, you were just tightening it…
EndangeredPedals on
If the left side is already out, then I think you’re SOL. If not, there’s a chance, but for that to break like this, you should be planning on a new frame.
st0pmakings3ns3 on
I know it’s hard to tell such things from pictures, but is your bb shell oval? It kind of looks off to me.
In any case: once it has started desintegrating, I’ve had the best experience alternating between a dremel, hammer and flat headed screwdriver. Mind the threads, good luck.
Drxgue on
This will be a pain in the ass to remove without damaging the frame. I’d drill holes into the cartridge itself and use those to unthread the bottom bracket. Otherwise it’s a matter of somehow removing the axle and cutting into the cup in enough places to crush it inwards and remove.
UrIsNotAWord on
Is that BB cup plastic or metal?
Also, let’s see a photo of the non-driveside. It’s important because while most cartridge-style bottom brackets install from the driveside, there are a few that install from the non-driveside. If you’re lucky then that’s what you are dealing with here, because if that’s the case then you still have a shot at removing the BB cartridge from the non-driveside. Then you can remove the broken driveside cup using destructive methods.
flippertyflip on
Remove non drive side. Hit it hard with a big hammer. See if axle comes out. Then just chip away at the plastic.
Throw_shapes on
Looks like plastic, melt it out
Stunning-Bike-1498 on
If the cups are plastic, destruction is usually dirty but relatively easy. If they are aluminium … well time to get a drill, penetrating oil and a robust pin spanner.
ProfessionalEbb7815 on
Use a blow torch and melt the plastic out of the bb shell. Messy but you’ve little choice
10 Comments
Were you turning left? Based on the way the splines at the top have shifted to the left, **it sure looks that way.**
The drive side of this bottom bracket is left-hand threaded. That means you have to turn to the right to loosen.
In any case, you are probably getting into destructive removal at this point. It’s gonna be a journey – one probably better left to a pro.
Were you trying to loosen the drive side counterclockwise? If you it might not have been seized, you were just tightening it…
If the left side is already out, then I think you’re SOL. If not, there’s a chance, but for that to break like this, you should be planning on a new frame.
I know it’s hard to tell such things from pictures, but is your bb shell oval? It kind of looks off to me.
In any case: once it has started desintegrating, I’ve had the best experience alternating between a dremel, hammer and flat headed screwdriver. Mind the threads, good luck.
This will be a pain in the ass to remove without damaging the frame. I’d drill holes into the cartridge itself and use those to unthread the bottom bracket. Otherwise it’s a matter of somehow removing the axle and cutting into the cup in enough places to crush it inwards and remove.
Is that BB cup plastic or metal?
Also, let’s see a photo of the non-driveside. It’s important because while most cartridge-style bottom brackets install from the driveside, there are a few that install from the non-driveside. If you’re lucky then that’s what you are dealing with here, because if that’s the case then you still have a shot at removing the BB cartridge from the non-driveside. Then you can remove the broken driveside cup using destructive methods.
Remove non drive side. Hit it hard with a big hammer. See if axle comes out. Then just chip away at the plastic.
Looks like plastic, melt it out
If the cups are plastic, destruction is usually dirty but relatively easy. If they are aluminium … well time to get a drill, penetrating oil and a robust pin spanner.
Use a blow torch and melt the plastic out of the bb shell. Messy but you’ve little choice