Quote:
Originally Posted by dton13
Just FYI, a difference between 170 and 172.5mm cranks is 2.5 mm not 2.5cm. That makes a total difference of 5mm (between both arms) which is small to say the least.
I had 175mm cranks on my old bike (hybrid) and I didn't notice a difference stepping down to 172.5 cranks on my road bike. I also have major toe overlap issues with my 52cm bike, its common problem for us vertically disadvantaged people. Switching to even a 170mm crank wouldn't prevent it.  |
Agreed! I even have 165mm crankarms on my Rocky Mountain Turbo, still a little bit of toe rub. However, I do notice the smaller diameter when pedalling when compared to one of my 175mm mountain bikes.
And FYI, SOME crankarms, they're all manufactured the same length overall, (probably to save on manufacturing costs) it's just the placement of the threaded hole moves to give you either 175, 172.5, 170mm, etc.. Just saying that, in case you think you're saving weight with a shorter crankarm.