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2. Bicycle gearing - Wikipedia

   en.wikipedia.org/wiki/Bicycle_gearing

   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 the rider and the anticipated ...

3. Gear inches - Wikipedia

   en.wikipedia.org/wiki/Gear_inches

   Gain Ratios—A New Way to Designate Bicycle Gears; Gain and Watts Calculator; Mike Sherman's gear calculator Archived 2011-03-10 at the Wayback Machine Online calculator for derailleur gears, with useful graphic displays; HPV Drivetrain Analyzer A drivetrain analyzer and gear calculator for HPV's (Human Powered Vehicles) that will handle ...

4. Crankset - Wikipedia

   en.wikipedia.org/wiki/Crankset

   Typical ratios would be 22/32/44 teeth as opposed to 28/38/48 or 24/36/46 teeth. These would be used with smaller cassettes (Generally cassettes are available with 11 tooth minimum gear sizes for compact chainsets while standard chainsets were designed for cassettes with a 13 or 14 tooth top gear), giving the same overall ratio.

5. Single-speed bicycle - Wikipedia

   en.wikipedia.org/wiki/Single-speed_bicycle

   A very popular "off road" mountain bike gearing, for the 26″ wheel size, is 39:18, approximately a 2:1 gear ratio and 56.35 gear inches, for versatile trail riding. A great "on road" gear ratio, for the 26″ wheel, is 42:17, approximately a 2.5:1 ratio and 64.2 gear inches for versatile tour riding.

6. Bicycle performance - Wikipedia

   en.wikipedia.org/wiki/Bicycle_performance

   The fitness and cadence of the rider, bicycle tire pressure and sizes, gear ratios, slope of the terrain affect the overall speed of the rider. A person pedalling with 100 W power can achieve 5.5 m/s on a roadster, 7.5 m/s on a racing bicycle, 10 m/s with a faired HPV and 14 m/s with an ultimate HPV.

7. Bicycle drivetrain systems - Wikipedia

   en.wikipedia.org/wiki/Bicycle_drivetrain_systems

   A chain drive and rear derailleur gear change, the most popular system in use today A shaft-drive with crankset and rear gear hub. Bicycle drivetrain systems are used to transmit power on bicycles, tricycles, quadracycles, unicycles, or other human-powered vehicles from the riders to the drive wheels.

8. Hub gear - Wikipedia

   en.wikipedia.org/wiki/Hub_gear

   A hub gear, [1] internal-gear hub, [2] internally geared hub [3] or just gear hub [4] is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears. The gears and lubricants are sealed within the shell of the hub gear, in contrast with derailleur gears where the gears and mechanism are exposed ...

9. Cadence (cycling) - Wikipedia

   en.wikipedia.org/wiki/Cadence_(cycling)

   Cadence can be measured via various types of sensors, for example a simple reed switch and a magnet which detects one revolution each time the crank arm passes a point on the frame, or more advanced sensors based on a force sensor (e.g. pedals), torque sensor (e.g. crank arms) or other types of cycling power sensors.