The bicycle rim, like the bicycle frame hasnít changed much in design, its still round and always will be. From the first wooden bicycle rims the next were made of steel, then alloy and now if you can afford it, carbon. Of all bicycle parts the best bike rims can make a big difference to how your bike handles. First the weight of your carbon bike rims affects your sprinting and climbing as the weight will low you down, for a long, flat effort the weight isnít so important as when you get the wheels rolling the weight can help to keep them going. The shape of the road rimscan be important also, a flat carbon road bike rims is best for climbing as aerodynamics are not so important on a hill, a deep section, aero, rim will help you cut through the air, but in a cross wind could cause you handling problems.
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