Questions tagged [bottom-bracket]
The part of your bike that contains the axis the cranks arms spin 'round. (The crank arms are where the pedals attach.)
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How to read chainline specs for crankset and bottom bracket compatibility?
General question:
I've been trying to find a replacement crankset, but have been having trouble understanding other posts about compatibility with respect to chainline. It seems that people add the ...
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Will Sram Dub Pressfit BB92 fit a Sram Apex Crankset?
I would love your help. Will this Sram Dub Pressfit BB92:
Fit the Sram Apex Crankset:
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Bottom bracket sizing: Samox, SRAM, and Shimano confusion
I have a difficult time finding the right sizes. I bought a Canyon, with these original parts:
Bottom bracket: SAMOX Pressfit BB8601
Crank: SAMOX TAM37 46T
With a SRAM apex gearset, SRAM PG-1130 ...
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crank arm with 15mm diamond holes
I have a stationary bike that was given to me. The threads for the pedals are stripped, so I was trying to replace the crank arms.
Both arms are diamond hole types, I managed to get them off, but I ...
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How bad is an internal bottom bracket with a body that is 2mm longer than the orignal BB
My belt drive bicycle came with a Shimano internal bottom bracket. Shimano BB UN300, 127 mm length, 68 mm width, square taper. Below a picture. On the part is written
BB UN300
68 UJ
BC137x24D-EL
I ...
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Is the Shimano Bottom Bracket UN300 D-EL 127mm or 127.5mm?
I have this bottom bracket on my belt drive bicycle.
Shimano UN300 68 UJ BC137x24 D-EL
The person who sold me the bike said the BB's length is 127mm, width 68mm, and square type. (I cannot get hold ...
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"Vintage" internal cable routing to external
I have an "old" bicycle. The branding on the frame suggests it's a "Coppi", and I believe it to be from the 80s.
There's a lot that I don't know about the bike, but for the ...
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JIS or ISO standard on Merlin Road 92 Titanium bottom bracket spindle?
My early 90s Merlin road frame got that titanium spindle and I wonder whether it is JIS or ISO square tapered. According to the catalogue the name of the bottom bracket is "Beta-C"
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What is the difference between Shimano SM-BBR60 and Shimano BB-MT501
Are these 2 bottom brackets compatible? Is one 'better' than the other? Is one more durable than the other, more efficient than the other?
I would guess that the BB-MT501 is meant for dirtier ...
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Left side crank arm stuck to spindle due to stripped threads, how to remove bottom bracket
The bicycle in question is a "Schwinn Women's Ranger 26" Mountain Bike". It has a slight play in the crank arms, stemming from the bottom bracket.
I tried taking the crank arms off, and ...
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Are 68mm and 73mm bottom bracket left side cups identical?
My MTB has a 73mm bottom bracket shell but it had 68mm BB installed. I found and purchased a Shimano BB-ES300 73mm BB but unfortunately I had to break apart its plastic cup (left side) since I ...
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FSA B3155 bottom bracket compatible replacement
I have Orbea orca m35i with Shimano cranks (24mm).
During bottom bracket bearings replacement, the cup got damaged.
It says "FSA B3155" on the cup, FSA support said this would be a ...
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bottom bracket axle length, chainline and crank compatibility
TLDR: How much leeway there is, if any, in selecting the bottom bracket axle length for octalink or square taper cranks in order to reduce chainline?
Background: I'm doing some minor modifications to ...
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FSA Mega Exo 24 threaded shell BB turns free when off the bike, but turns rough and gritty once installed
My FSA Mega Exo BB is about 2 years old and came on the bike when I bought it new. The right-side bearing is fine. However, the left-side bearing is gritty and resistant when installed in the frame, ...
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New Bottom Bracket grinding/crunching?
I recently bought a new Shimano BB-MT501 bottom bracket and installed it. However, once I put the Hollowtech crankset back in place, when turning the pedals there is a very obvious grinding or ...
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