The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely. It contains a spindle to which...

parts Bottom bracket, in bicycles Blade bracket, in ceiling fans Bracket, a component of dental braces Bracket (band), a pop punk band "The Bracket", an...

is connected to the rider by the pedals, to the bicycle frame by the bottom bracket, and to the rear sprocket, cassette or freewheel via the chain. The...

adjustable bottom brackets. Note that ISIS Drive bottom brackets need a separate tool (see below). Various bottom bracket wrenches for newer bottom bracket styles...

that tighten a split bottom bracket shell. As a standard sized bottom bracket threads into the eccentric, an oversized bottom bracket shell is required to...

A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. They...

frame. The bottom bracket may be overhaulable (an adjustable bottom bracket) or not overhaulable (a cartridge bottom bracket). The bottom bracket fits inside...

derailleur cables past the bottom bracket. Older derailleur bicycles used either brazed-on or clamp-on guides just above the bottom bracket, but newer bicycles...

center of the bottom bracket to the top of the head tube. bottom bracket drop, the distance by which the center of the bottom bracket lies below the...

pedalling. Even if a bottom bracket lockring is threaded onto the hub, along with a track sprocket, because the bottom-bracket lockring is not reverse...

8 series featured a tapered large diameter down tube, double-offset bottom-bracket cluster, ovalized top-tube, and double-butted seat tube to achieve the...

signals through a wiring harness to a battery pack, placed near the bottom bracket. The rechargeable lithium-ion battery pack supplies power to the derailleur...

right behind the bottom bracket or to a chain and seat stay near the rear hub. Side stands mounted right behind the bottom bracket can be bolted on,...

attachment points on the crank arms, when measured parallel to the bottom bracket axle. It may also be referred to as the "tread" of the crankset. The...

seat tube at the top, and the down tube connects the head tube to the bottom bracket. The rear triangle consists of the seat tube and paired chain stays...

calculate power. Power meters using strain gauges are mounted in the bottom bracket, rear freehub, or crankset. Certain newer devices do not use strain...

not concentric with the bottom bracket, or a linkage with a variable center of rotation, the distance between the bottom bracket and rear axle varies throughout...

downwards. The cable is often routed across the top or along the bottom of the bottom bracket shell on a cable guide, which redirects the cable up the lower...

The bottom bracket is placed eccentric in a bearing within the swingarm, the distance between the center of the bearing and the bottom bracket effectively...

The components include cranksets comprising cranks and chainrings, bottom brackets, chains, rear chain sprockets and cassettes, front and rear wheel hubs...

tandems. Even higher gear ranges can be achieved by using a 2-speed bottom bracket hub gear in conjunction with suitable derailleurs. There are two main...

under bottom bracket; Campagnolo dropouts, derraileurs and shifters; Universal 'AER' non-aero brakeset; Ofmega Mistral headset, bottom bracket and crankset;...

1980 often used French-threaded bottom brackets (now difficult to find replacement parts for). French bottom brackets, like Italian ones, used right-hand...

roller. Two other dynamo systems used on bicycles are hub dynamos and bottom bracket dynamos. No extra resistance when disengaged When engaged, a dynamo...

is the "crank cotter pin" used to lock bicycle pedal cranks to the bottom bracket axle. These are not "split" at all and are wedge shaped. A new split...

1976 Grifter, all had a Raleigh exclusive 76mm wide bottom bracket shell. Headsets and bottom brackets use Raleigh exclusive 26 threads per inch (TPI) threading...

bottom bracket was typical 10+ years ago; now many cyclo-cross-specific frames do not have elevated bottom brackets, in fact many have a lower bottom...

top dead centre, the pedals are higher than the frame is above the bottom bracket (BB). In terms of geometry, trials frames, especially those biased towards...

in tight turns). A pivoting-boom front-wheel drive (PBFWD aka moving bottom bracket recumbent) configuration also overcomes heel strike since the pedals...

stamped "Colnago" name on bottom of headtube. Aluminum tubing screwed and glued to lugs. Sizing stamped in bottom bracket, no serial number on rear dropouts...