Originally Posted by
maltess
Heelo, i would like to know how if the crankset size is the main factor for spped in a bike. Of course besides frame and componentes weigt. I mean , for example, two diffrent bicycles with the same weight , one with a crank 48 ad the other with a 52. Is the 52 going to be faster, or there are other factors? like I imagine frame design or the rear wheel number of speeds. How they interact with the crank?
best regards
It all boils down to how much power you can put out with your legs for how long, and how to match that output to the basic physics requirements of road speed, load, wind, and grade. A bigger chainwheel results in more rear wheel speed and more roadspeed for a given crank speed (or cadence), but tht road speed requires more power from your legs. If you can provide it, you can go faster. If not, well, you might go slower!
It's elementary, but not simple!
Road Fan