Originally Posted by
dookie
you said 'freewheel', implying not fixed-gear. if indeed you meant that, go for the longer cranks and coast through the tightest corners...the bike will be far more stable and speed loss minimal. it doesn't sound like you're racing...
your right...but i love option.. 15 cog, have fun with buddies : freewheel-cruise on the beach and get around the city to take pictures. The 17 cog for dailiy use on campus and up and down hills. around campus i want to get around on a fix gear. It help me build up endurance. When, eventually, I've build enough endurance, i'll lower the gears again...i'm sorry if i'm not at your level yet

...just messing with you buddy
Originally Posted by
cyrano138
I'm not trying to start a fight or anything, but there's something I've never understood about this argument. I get the clearance thing, because I'm sure any little bit helps, though, for the record I have 170's on my fuji track and I've NEVER struck even after cornering pretty damned fast. I think I read somewhere that the fuji track has a nice higher bottom bracket.
But the idea that it's going to produce any noticeable difference in torque is absurd, if I remember my physics correctly. Torque is directly proportional to the distance (from the center of rotation) from which it's applied, which in this case is the crank arm. So you're talking about a 2.94% decrease from 170's to 165's.
Correct me if I'm wrong, but maybe this is just another case of people trying to sell you **** you don't need?
i'm personally looking for clearence, however, regarding your physics, it true but when you work with gears/ratios, things change, but you are somewhat right.