Originally Posted by
dtrain
The stiffness question is not about the spacer per se. It's that an 11s compatible wheel/hub would have its drive side spoke heads just a tiny bit closer to the center vs. the exact same wheel/hub in an 8, 9, 10 design. Not trying to be rude, but your example of moving from 9 to 10 on the same wheel isn't relevant to that question.
I understand that.
What the OP asked is about the effect of putting a 10 speed cassette with a spacer on an 11 speed hub.
Originally Posted by
spectastic
I understand that to do this, I would need a spacer, which compromises a little stiffness in the hub.
My point is that the spacer isn't going to change the stiffness of the setup.
The 9 speed 10 speed analogy is relevant because it addresses the effect of the spacer on the same wheel, which is nill.
The slightly different dish, all else equal, would have a tiny effect.