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2. Bottom bracket - Wikipedia

   en.wikipedia.org/wiki/Bottom_bracket

   Bearing cups are pressed into the bottom bracket shell. The crank holds the cones, facing in; adjustment is made via the left-threaded non-drive side cone. One-piece cranks are easily maintained and reliable, but heavy. They are found on BMX bikes as well as children's bicycles and low-end road and mountain bikes.

3. List of bicycle parts - Wikipedia

   en.wikipedia.org/wiki/List_of_bicycle_parts

   Cone: holds bearings in place, pressed against the cup; Cotter: pin for attaching cottered cranks; Coupler: to connect tubing together; Crankset or chainset: composed of cranks and at least one chainring; Cup: receives ball bearings which roll along its inner surface; integrated on most conventional hubs or can be pressed into older bottom ...

4. Crankset - Wikipedia

   en.wikipedia.org/wiki/Crankset

   The cranks are pressed into place and prevented from squirming off via fretting by a bolt or nut installed into or onto the bottom bracket spindle. [8] The head of the bolt or the nut sits inside a counterbore that is also threaded to accept a crank puller tool. The counterbore is often covered with a dust cover.

5. Bicycle tools - Wikipedia

   en.wikipedia.org/wiki/Bicycle_tools

   Bottom bracket wrench for newer bottom bracket styles Crank extractor. A chain tool or chain splitter is used to 'break' a chain, in order to remove it from a bike or remove links, or to put a chain back together. A crank extractor is used to pull the crank off the bottom bracket spindle. A pedal wrench removes the pedals from the bicycle. It ...

6. Cogset - Wikipedia

   en.wikipedia.org/wiki/Cogset

   The major disadvantage of the multiple sprocket freewheel design is that the drive-side bearing is located inboard of the freewheel, and as sprockets were added over time, the bearing moved inward, farther from the drive-side axle support. This resulted in more flexing stress being placed on the axle, which can bend or even break.

7. Tunnel crankcase - Wikipedia

   en.wikipedia.org/wiki/Tunnel_crankcase

   A tunnel crankcase, tunnel crankshaft or disc-webbed crankshaft [1] is a design feature of a piston engine where the main bearings that support the crankshaft within the crankcase form the largest diameter of any part of the crankshaft and are larger than the crank webs. This requires a crankcase with a large tunnel instead of cross web ...

8. Detangler - Wikipedia

   en.wikipedia.org/wiki/Detangler

   A second disc is attached to the bottom of the thrust bearing such that the entire assembly moves together up and down the steering axis while each disc can rotate independently around the axis. A second set of cables are attached to tabs on this lower disc and pass through cable stops mounted on the either side of the head tube .

9. Peanut butter wrench - Wikipedia

   en.wikipedia.org/wiki/Peanut_butter_wrench

   Campagnolo crank spanner, used to tighten or loosen the bolt (15 mm) which holds the crank to the bottom bracket spindle. Length is 17 cm. A peanut butter wrench, also known as a crank bolt spanner or a crank spanner, is a single-ended box wrench or ring spanner used in cycling to tighten older 14 mm and 15 mm crank bolts, or the wheel nuts (track nuts) on hubs with solid axles commonly found ...