Originally Posted by

**walk_in_fark** Hello, I have this one question that I have been mulling over for a day now and I cant seem to figure it out. I have to develop a formula that predicts the velocity of a cyclist and in the question it states that the speed depends on three independant factors, these are; the speed at which the cyclist peddles to turn the front gear, in rpm, the gear ratio from the front gear to the rear gear, a ratio between the number of teeth on the front, compared to number of teeth in the rear, and final, the diametre of the wheel. So far, I've tried to figure this out and im stuck, anyone help me.