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2. Cogset - Wikipedia

   en.wikipedia.org/wiki/Cogset

   Multiple speed freewheels were common on quality high end bikes until the late 1980s. [3] Suntour — Maeda Industries (Japan) introduced a compact 6 speed freewheel which reduced the spacing between the sprockets and was the same width as a standard 5 speed freewheel but required a narrower chain than the standard.

3. Freehub - Wikipedia

   en.wikipedia.org/wiki/Freehub

   As the bicycle rider pedals, the freewheel is continuously kept tight, as chain torque is in the right-hand direction. This becomes a problem when the freewheel needs to be removed. Having undergone high torque from leg muscles, it is difficult to loosen and remove the freewheels. A freehub, on the other hand, has cogs that slide onto an ...

4. Flip-flop hub - Wikipedia

   en.wikipedia.org/wiki/Flip-flop_hub

   Also, if rear brakes are used (essential where a freewheel is used) brake pads may need to be adjusted. The ISO threading for freewheels (Single or Multiple Speed) is the same as for track/fixed cogs. A standard single-speed BMX style freewheel can be used on the track threads of the hub. Because of the stepped down lock ring threads, not as ...

5. Single-speed bicycle - Wikipedia

   en.wikipedia.org/wiki/Single-speed_bicycle

   Single-speed bicycle builders have converted many former multi-geared cycles into single or fixed gear through the removal of the derailleurs and associated hardware. The simplest conversion uses the existing freewheel/cassette and crankset, the chain being cut to fit the desired gear ratio.

6. Bicycle gearing - Wikipedia

   en.wikipedia.org/wiki/Bicycle_gearing

   Single-speed mountain bike. A single-speed bicycle is a type of bicycle with a single gear ratio and a freewheel mechanism. These bicycles are without derailleur gears, hub gearing or other methods for varying the gear ratio of the bicycle. Adult single-speed bicycles typically have a gear ratio of between 55 and 75 gear inches, depending on ...

7. Freewheel - Wikipedia

   en.wikipedia.org/wiki/Freewheel

   The simplest freewheel device consists of two saw-toothed, spring-loaded discs pressing against each other axially with the toothed sides together, like a ratchet but with the usual stationary part also rotating. Rotating in one direction, the saw teeth of the drive disc lock with the teeth of the driven disc, making it rotate at the same speed.