Three Speed Bicycles

Rubric: Other | 17 Apr 2014 | no comments yet »
Three Speed Bicycles

Three Speed Bicycles Once upon a time there were bicycles that seemed to invite you to go for a ride. They had fenders to keep themselves and their riders clean. They had a chainguard to protect their rider’s trouser cuff. They had a saddle that, though not as comfortable as an easy chair, at least didn’t seem like it was on the attack. They had few enough gears for the correct one to be easily chosen, (3, 4, or 5), and yet there were enough to make the bicycle easy to ride. They had tires that were just wide enough to go just about anywhere except in the rough and mud. They had handlebar grips that were padded well enough that gloves were usually not needed by their rider. It ...

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10 Speed Bicycle Types

Rubric: BMX bikes | 14 Mar 2014 | no comments yet »
10 Speed Bicycle Types

Commuter Bikes A commuter bike can use any kind of bicycle frame, but choosing a road frame offers a commuter minimal wind resistance and maximum speed. Commuter bikes are differentiated more by their accessories than components (the parts that make the bike move) and geometry (what the frame looks like). A commuter bike may have fenders, pannier (bag) racks, lights, flat-resistant tires and a mount for a lock. When buying (or converting) a commuter bike, choose something sturdy but inexpensive in case you have to replace it after theft or an accident. Also, consider using a flat handlebar that puts you in an upright position. You will catch more wind, but you will also catch motorists’ ...

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Bicycle performance

Rubric: Other | 11 Mar 2014 | no comments yet »
Bicycle performance

Energy efficiency. Racing bicycles are light in weight, allow for free motion of the legs, keep the rider in a comfortably aerodynamic position, and feature high gear ratios and low rolling resistance. On firm, flat ground, a 70 kg (150 lb) person requires about 30 watts to walk at 5 km/h (3.1 mph). [ citation needed ] That same person on a bicycle, on the same ground, with the same power output, can average 15 km/h (9.3 mph), so energy expenditure in terms of kcal /(kg·km) is roughly one-third as much. Generally used figures are 1.62 kJ /(km∙kg) or 0.28 kcal/(mi∙lb) for cycling, 3.78 kJ/(km∙kg) or 0.653 kcal/(mi∙lb) for walking/running, 16.96 kJ/(km∙kg) ...

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Single-speed bicycle

Rubric: Road bicycles | 10 Mar 2014 | no comments yet »
Single-speed bicycle

Single-speed bicycle Single-speed mountain bike A single-speed bicycle is a type of bicycle with a single gear ratio. These bicycles are without derailleur gears. hub gearing or other methods for varying the gear ratio of the bicycle. The fixed-gear single-speed bicycle is the most basic type of bicycle. A fixed-gear bike does not have a freewheel mechanism to allow coasting. Contents Advantages and disadvantages versus multi-speed bicycles. Advantages. 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 ...

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