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The crankset on a Freestyle Street BMX plays a crucial role in transmitting power from the rider to the bike's wheels when performing tricks on urban obstacles. Here is a description of its function, its characteristics and the associated standards:
Function :
1. Power transmission:
The crankset converts the rotational motion of the pedals into the rotational motion of the rear wheel, allowing the rider to accelerate and maintain speed while performing tricks.
2. Shock resistance:
The crankset is subjected to significant forces during landings and repeated impacts on hard surfaces such as concrete or metal. It must therefore be designed to withstand these constraints and ensure the durability of the bike.
Features :
1. Material:
Freestyle Street BMX cranksets are generally made from chromoly steel or aluminum to combine lightness and impact resistance. Some high-end models may be made of titanium to further reduce weight while maintaining the necessary strength.
2. Type of cranks:
Freestyle Street BMX cranksets can be equipped with either three-piece or two-piece cranks. Three-piece cranks generally offer better impact resistance and increased durability, while two-piece cranks can be lighter and more economical.
3. Length of cranks:
Crank lengths may vary depending on rider preference and bike size. Shorter cranks provide better responsiveness and freedom of movement when performing tricks, while longer cranks provide better leverage and increased pedaling power.
4. Bottom Bracket Compatibility:
It is important to choose a crankset that is compatible with the bicycle frame's bottom bracket to ensure proper fitment and efficient power transmission.
Standards:
1. Axle diameter:
Freestyle Street BMX cranksets typically feature a 19mm (0.75 inch) diameter axle to fit standard bottom bracket bearings.
2. Pedal Compatibility:
Freestyle Street BMX cranksets are generally compatible with a variety of standard bicycle pedals, although some models may require specific adapters or configurations.
In summary, the crankset on a Freestyle Street BMX is an essential component that ensures the efficient transmission of power from the rider to the wheels of the bike when performing tricks on urban obstacles. With specific features such as material, crank type and bottom bracket compatibility, it contributes to an optimal riding experience and allows riders to push their limits and explore new playgrounds in the city.