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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 ...
Swingbike, a fun-bike where both the front and rear fork can swing, so that the rider can turn both with their hips and with the handlebars, and thereby partially create propulsion with their hips [7] Risigo, a fun-bike where the seat moves up and down in coordination with the crank, so that the hip prevents (or contributes to) propulsion [7]
They are durable and comfortable, capable of transporting baggage, and have a wide gear range. The BXR bike (a.k.a. Bicycle Crossroadster) or Sport Touring BMX. features an lightweight BMX bike-sized (20-inch/406 mm rims) wheels or (22-inch/451 mm rims) wheels; Built-in frames, usually from the BMX racing, minivelos or foldable city/touring bikes.
Typical gear ratios on bicycles range from very low or light gearing around 20 gear inches (1.6 metres per revolution), via medium gearing around 70 gear inches (5.6 m), to very high or heavy gearing around 125 gear inches (10 m). As in a car, low gearing is for going up hills and high gearing is for going fast.
The seat post attaches to the seat rails by means of a clamp; Seat lug: a frame lug on the top of the seat tube serving as a point of attachment for a clamp to secure the seat post; Seat tube: the roughly vertical tube in a bicycle frame running from the seat to the bottom bracket; Seat bag: a small storage accessory hung from the back of a seat
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.
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.
This mountain bicycle features oversized tires, a full-suspension frame, two disc brakes and handlebars oriented perpendicular to the bike's axis. A time trial racing bicycle A Half Wheeler trailer bike at the Golden Gate Bridge Working bicycle in Amsterdam, Netherlands A BMX bike, an example of a bicycle designed for sport A racing upright bicycle A recumbent bicycle Diagram of a bicycle A ...