Bicycle frame manufacturing are dominated by the use of carbon fiber due to its excellent specific mechanical properties (meaning the specific property value divide by its density). The stiffness and light weight of this material allows to obtain high pedal efficiency and safety cornering at high speed.
However, carbon fiber bike frames show a handicap in order to do long distances on bumpy roads. It is in this aspect where basalt fiber can play an important role with the objective to obtain better flexibility properties and shock absorption, but without compromising the overall structure stiffness. Three types of analysis are made in this article, all of them are based in the “Racing bicycles – Safety requirements and test methods” norm. In which it seeks to study the feasibility of building basalt fiber bicycle frames.
As a conclusion, is was obtained that the optimum configuration is to divide the bicycle frame in two parts: comfort zone made of basalt fiber and power zone made of carbon fiber.
Romero, RACORMANCE –Composites Bikes.
Justo, F. París Group of Elasticity and Strength of Materials, University of Seville, Spain.