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A square-taper bottom bracket cartridge. A Shimano UN25 Square Taper Bottom Bracket cartridge before fitting. Previously referred to as 'cotterless', since this was the design that was introduced after cottered spindles, square taper was once the most popular (and only) style 'cotterless' crank.
There is a bearing surface on the spindle, and on each of the cups that thread into the frame. The bottom bracket may be overhaulable (an adjustable bottom bracket) or not overhaulable (a cartridge bottom bracket). The bottom bracket fits inside the bottom bracket shell, which is part of the bicycle frame
Eccentric bottom bracket on a Burley tandem bicycle held in place with two set screws. The term is also used to refer to the device often used on tandem bicycles with timing chains, single-speed bicycles with a rear disc brake or an internal-geared hub, or any bicycle with vertical dropouts and no derailleur, to allow slight repositioning, fore and aft, of a bottom bracket to properly tension ...
Even newer designs have the bottom bracket spindle, usually hollow and larger diameter than is possible for bottom brackets with bearings held inside the bottom bracket shell of a bike frame, for reduced weight and increased stiffness, permanently attached to the right crank (Shimano and others) or the left crank (Race Face).
Accused rapist rapper Sean “Diddy” Combs hired men to patrol his parties and recruit young women for “intimate” time with him — claiming it was “an honor” to be asked, a targeted ...
An MTA cleaner allegedly slashed a man who confronted him for pouring bleach near the spot where he’d been sleeping on a Brooklyn subway platform early Monday, cops and sources said.
For example, if you earn $100K and your employer matches 100% of contributions up to 4%, you should contribute at least $4,000 in 2025 to avoid leaving free money on the table.
Bicycle pedals are left-threaded on the left-hand crank so that precession tightens the pedal rather than loosening it. This may seem counter-intuitive since the pedals rotate in the direction that would unscrew them from the cranks, but the torque exerted due to the precession is several orders of magnitude greater than that caused by bearing friction or even a jammed pedal bearing.