Cerca nella Comunità

Che peso dare ai Pesi?? Questo è un argomento che non ha mai trovato nessuno d'accordo, in pratica ognuno ha la sua opionione/preferenza. Anche le dimostrazioni matematiche sembrano avere interpretazioni differenti. E' vero che il peso delle ruote equivale a 3 volte il peso del telaio? Detto in termini pratici, guadagnare 100 gr sulle ruote equivale a guadagnarne 300 sul telaio? Riporto le parole di Ser Pecora, che riporta Sheldon...che la pensa come me (:D) "Other factors affecting performance are not so tricky to evaluate. Weight, for instance. Weight is a key performance factor in climbing. In this regard, conventional wheels still remain the top choice. [...]We also evaluated the moment of inertia of the wheels. Moment of inertia is technical jargon for the "rotating mass" of an object. It is common knowledge among cyclists that weight reductions in rotating components are more beneficial, because, when accelerating, a rotating component not only has to gain a higher translational speed, but it must also be made to spin faster. This tendency to resist changes in rotational velocity is related to mass and to the square of its distance from the axis of rotation. Hence, it is expressed in kilograms times meters square. The values of moment of inertia produced a ranking similar to that of weight, with the notable exception of the Specialized. The tri-spoked carbon fiber heavyweight carries most of its heft in a clumsy hub design. It fared better in moment of inertia, placing fourth, just behind the two conventional wheels and the Shamal. A convenient way to appreciate moment of inertia is to convert its value into an equivalent mass. This equivalent mass is the mass of a non rotating object that would oppose the same resistance to acceleration. We have made the calculation and tabulated the values. This piece of information is of particular interest to those who intend to use the wheels for criterium racing. In criterium racing, reaccelerating corner after a corner is what wears the riders down." Io vado un pò controtendenza, rispetto a questi mostri da 80mm (mostri in tutti i sensi) preferisco profili bassi facili da rilanciare e da manovrare, ....e soprattutto super leggeri. Non parlo di specialità ovviamente, ma solo di preferenza in termini generali di utilizzo della bici (dalla criterium brianzola, alla spesa all'esselunga...alle uscite per Pavia)