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A fixed-gear bicycle (or fixed-wheel bicycle in British usage, [citation needed] commonly known in some places as a fixie [1]) is a bicycle that has a drivetrain with no freewheel mechanism such that the pedals always will spin together with the rear wheel. The freewheel was developed early in the history of bicycle design but the fixed-gear ...
A single-speed bicycle is generally cheaper, lighter, and mechanically simpler than its multi-geared equivalent. Without derailleurs or other gearing systems, there are fewer parts on the bicycle that require maintenance, making this type of cycle useful for city commuting in all weather.
Freestyle fixed gear is stunt riding on a fixie. It is an extreme sport where the stunts share elements from BMX, artistic cycling, dirt jumping, and trials. The flat ground style of tricks, similar to artistic cycling, is called Trick-Track or Tarck. Street and park riding, that is more similar to BMX, is generally called FGFS (Fixed Gear ...
Track bicycles, however, need increased strength rather than a lightness or a flexibility, so most of the track chains still use the full-bushing design. Tires
Large differences in the number of teeth may require addition or removal of chain links to achieve a proper fit. 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.
This provides nearly the same lower gear ratios as a triple but without the need for a third chainring, a triple front derailleur and a long cage rear derailleur. Both Shimano and Campagnolo recommend and sell front derailleurs specifically designed for compact cranksets, claiming better shifting.
The 'diamond' frame's central, horizontal top bar forces the rider to swing a leg over the bicycle's seat. A Triumph step-through, ladies', or open frame Dursley Pedersen bicycle circa 1910 A penny-farthing photographed in the Škoda Auto Museum in the Czech Republic A Brompton folding bicycle Bicycle in Victorian Plymouth, England, with a predecessor of the Starley diamond-frame A cantilever ...
A parking space commonly contains a parking chock (also known as a parking curb, parking bumper, wheel stop, parking chock, curb stop, bumper block, [2] and turtarrier [citation needed]), a barrier which is used to prevent cars from pulling too far into the space and obstructing an adjacent parking space, curb, or sidewalk.