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A flat bar road bike, also called a fitness bike, is a relatively new style of bicycle. It is simply a road bike fitted with a flat handlebar and MTB-style shifters and brake levers. [4] [5] This combination provides a light, fast bike with a more upright riding position that is more comfortable and gives a better view in traffic. Flat bar road ...
Portage strap: a strap (usually made of leather) attached to the inside of the bike frame, designed to make carrying the bike over one's shoulder easier; Pulley wheel: see Jockey wheel; Power meter: a device on a bicycle that measures the power output of the rider; Quick release: a skewer with a lever on one end that loosens when the lever is ...
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.
Clamp: Until recently, most front derailleurs are mounted to the frame by a clamp around the frame's seat tube, and this style is still the standard on mountain bikes and is common on road bikes. Derailleurs are available with several different clamp diameters designed to fit different types of frame tubing.
Road racing bicycle forks have an offset of 40–55 mm. [2] For touring bicycles and other designs, the frame's head angle and wheel size must be taken into account when determining offset, and there is a narrow range of acceptable offsets to give good handling characteristics. The general rule is that a slacker head angle requires a fork with ...
The third method, gain ratio, also takes the length of the crankarm into account, which can vary from bike to bike. The fourth method uses two numbers and is only useful in comparing bicycles with the same drive wheel diameter. In the case of road bikes, this is usually around 670 mm. A 700c "standard" wheel has a 622 mm rim diameter.