For BSA30 bottom brackets, traditionally designed for 30mm spindle cranks and threaded BSA frames, a common challenge has been the lack of a protective sleeve between the bearings. These bottom brackets usually feature two separate bearing cups that thread into the frame, leaving minimal space for conventional sleeves.
I run Rotor ALDHU's with a 30mm axle on my Cannondale SuperSix EVO Hi-Mod 2 (2024). The diameter of the bearing cup threads is by design/spec to tight to slip a bottom bracket sleeve in (and there aren't any for BSA 30). I wanted a solution to keep the DI2 cables and brake lines from interfering with the axle.
A bottom bracket sleeve that "folds/rolls" and expands when mounted.
(Tested and designed for ASA - providing sufficient flexibility)
BSA-30mm-Huelse.stl | 430.6KB |