Can rotor cranksets take another BB than BB30?
05-17-19, 03:21 AM
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Can rotor cranksets take another BB than BB30?
Hi, can i avoid the BB30 bottom bracket,which is already installed (and started allready cracking noises), and instead put another BB? The crankset is Rotor on a road frame The frame can take shimano BBs , (BB92. or BB72 pressfit cups.).
05-17-19, 06:53 AM
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What frame do you have? Can you find your crankset model and/or provide pics? Rotor makes road cranksets in both 30mm and 24mm spindle diameters so it would be good to know exactly what's going on; it would be unusual to see a crankset with a 30mm spindle in a BB86 frame.
If you have a 24mm spindle (like my Rotor, which is a 3D24), you might be able to get a BB for your frame that threads together (like the one from Wheels Manufacturing) and is less prone to creaking.
If you have a 24mm spindle (like my Rotor, which is a 3D24), you might be able to get a BB for your frame that threads together (like the one from Wheels Manufacturing) and is less prone to creaking.
05-17-19, 11:31 AM
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What frame do you have? Can you find your crankset model and/or provide pics? Rotor makes road cranksets in both 30mm and 24mm spindle diameters so it would be good to know exactly what's going on; it would be unusual to see a crankset with a 30mm spindle in a BB86 frame.
If you have a 24mm spindle (like my Rotor, which is a 3D24), you might be able to get a BB for your frame that threads together (like the one from Wheels Manufacturing) and is less prone to creaking.
If you have a 24mm spindle (like my Rotor, which is a 3D24), you might be able to get a BB for your frame that threads together (like the one from Wheels Manufacturing) and is less prone to creaking.
05-17-19, 12:02 PM
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Bottom brackets are specific to frames, not cranks.
Frames with BB86 bottom bracket shells have a 41 mm bore. Frames with BB30 bottom bracket shells have a 42 mm bore. The bike can't be both BB86 and BB30 at the same time.
I agree with @WhyFi. Look for a Praxis Conversion, Wheels Mfg "Thread Together" or Enduro Torqtite. Installation is super easy and it will never creak.
Frames with BB86 bottom bracket shells have a 41 mm bore. Frames with BB30 bottom bracket shells have a 42 mm bore. The bike can't be both BB86 and BB30 at the same time.
I agree with @WhyFi. Look for a Praxis Conversion, Wheels Mfg "Thread Together" or Enduro Torqtite. Installation is super easy and it will never creak.
Last edited by TimothyH; 05-17-19 at 12:07 PM.
05-17-19, 02:14 PM
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Bottom brackets are specific to frames, not cranks.
Frames with BB86 bottom bracket shells have a 41 mm bore. Frames with BB30 bottom bracket shells have a 42 mm bore. The bike can't be both BB86 and BB30 at the same time.
I agree with @WhyFi. Look for a Praxis Conversion, Wheels Mfg "Thread Together" or Enduro Torqtite. Installation is super easy and it will never creak.
Frames with BB86 bottom bracket shells have a 41 mm bore. Frames with BB30 bottom bracket shells have a 42 mm bore. The bike can't be both BB86 and BB30 at the same time.
I agree with @WhyFi. Look for a Praxis Conversion, Wheels Mfg "Thread Together" or Enduro Torqtite. Installation is super easy and it will never creak.
05-17-19, 02:44 PM
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If that's all correct, you're going to have very few options while retaining your crankset and I doubt that any of those options will be significantly better than what's already in place.
As Tim mentioned, the internal diameter of the frame bore is smaller on a BB86 vs BB30, so making a 30mm spindle fit in there is very uncommon. That I see, there are only a few "undersized" bearings that can fit in there and none of them screw together like the adapters previously mentioned. So, unless you want to get a new crankset with a 24mm spindle, you're probably looking at reinstalling with loctite or something.
As Tim mentioned, the internal diameter of the frame bore is smaller on a BB86 vs BB30, so making a 30mm spindle fit in there is very uncommon. That I see, there are only a few "undersized" bearings that can fit in there and none of them screw together like the adapters previously mentioned. So, unless you want to get a new crankset with a 24mm spindle, you're probably looking at reinstalling with loctite or something.
05-18-19, 03:47 AM
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If that's all correct, you're going to have very few options while retaining your crankset and I doubt that any of those options will be significantly better than what's already in place.
As Tim mentioned, the internal diameter of the frame bore is smaller on a BB86 vs BB30, so making a 30mm spindle fit in there is very uncommon. That I see, there are only a few "undersized" bearings that can fit in there and none of them screw together like the adapters previously mentioned. So, unless you want to get a new crankset with a 24mm spindle, you're probably looking at reinstalling with loctite or something.
As Tim mentioned, the internal diameter of the frame bore is smaller on a BB86 vs BB30, so making a 30mm spindle fit in there is very uncommon. That I see, there are only a few "undersized" bearings that can fit in there and none of them screw together like the adapters previously mentioned. So, unless you want to get a new crankset with a 24mm spindle, you're probably looking at reinstalling with loctite or something.
05-18-19, 05:52 AM
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Loctite is a brand, they have various compounds depending upon what you're looking to do. A quick search should tell you which of their compounds is appropriate for a creaking press-fit bottom bracket.
