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2. Bicycle chain - Wikipedia

   en.wikipedia.org/wiki/Bicycle_chain

   Bicycle chains Roller chain and sprocket. A bicycle chain is a roller chain that transfers power from the pedals to the drive-wheel of a bicycle, thus propelling it.Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics.

3. Skip-link chain - Wikipedia

   en.wikipedia.org/wiki/Skip-link_chain

   Skip-link chain is an obsolete roller chain for bicycles in which side plates are alternately short and long, and so rollers are alternately close together and far apart. A skip-link chain running over the rear sprocket on a bicycle. In bicycle chains, skip-link chain has the same one-inch spacing as the earlier block chain. Due to the ...

4. Chain tool - Wikipedia

   en.wikipedia.org/wiki/Chain_tool

   A typical chain tool. With a chain placed on the central sprocket, the screw is turned until a pin is pushed from the linkage. A chain tool is a small mechanical device used to "break" a bicycle chain in such a way that it can be mended with the same tool. A bicycle chain has links and plates that are pinned together; these pins can be pushed ...

5. Belt-driven bicycle - Wikipedia

   en.wikipedia.org/wiki/Belt-driven_bicycle

   A belt-driven bicycle is a chainless bicycle that uses a flexible belt, typically a synchronous toothed design, in order to transmit power from the pedals to the wheel. The application of belt drives to bicycles is growing, especially in the commuter bicycle market, due to the low maintenance and lubrication-free benefits.

6. Master link - Wikipedia

   en.wikipedia.org/wiki/Master_link

   Since a chain on a derailleur-fitted bicycle is reversed for part of its excursion through the drive-train, and because some cogsets have close ramp tolerances, such a link might cause a malfunction if the wrong selection were made. Bushingless chains, with smaller projections, are used on bicycles with large cogsets, since their clearances are ...

7. Crankset - Wikipedia

   en.wikipedia.org/wiki/Crankset

   Bicycles that are going to be used in abusive applications, such as freeride and BMX, will often incorporate a very heavy-duty chain guard that is designed to protect the chainrings from physical damage caused by impact with fixed objects; also called 'bashguards', these commonly replace a third (large) chainring.