Originally Posted by
AMoney
It's good to know that the 11 speed crank is compatible with a 10 speed drivetrain. Out of curiosity, would a 10 speed crank be compatible with a 9 speed drivetrain?
6-11 will all work, because the inner chain dimensions are all the same. You will get certain cranks that are noisier in crossover gears (Campy 10?) when you use wider chains, but most all of them will act the same and will be perfectly useful if you don't crossover.
And most 5 speed cranks fit in the same category. Chainline has not changed since 120mm hub spacing up through 130 (for road bikes).