Originally Posted by
AusTexMurf
I think it has more to do with cya than anything else.
I have been running that cassette on T660 Deore LX touring hubs, Velocity Dyad, hand built wheel set w/o problems on my Origin8 CX700.
On lots of hills, loaded bike, trailer, chariot child trailer, etc.....
I think potential problems would come in to play in the 29'er setting, off road, running a 22 teeth ring up front. Loads of torque possible.
Not what I am doing with mine, though. 39, 50 teeth up front, here.
Those are fair points, and it's possible that Shimano is simply being conservative, as they are known to be. I'm curious why you're running a 50/39 and 12-36 rather than a 50/34 compact and a 12-34... better front shifting? I was running 50/39 on my main road bike up until recently (changed to a 48/39.)
