Originally Posted by
dpicare26
Yes I'm almost certain the RD will limit me to 29t max cassette. Is there any caveat to starting at the rear, and moving forward if necessary? Ie. changing the Deore RD and larger cassette and seeing how that plays out. The more I think about it, the more I feel like a wuss for crying that my granny gear isn't small enough
. Either way, I'd be losing a DA component, and I think I'd rather keep the crankset if I had a choice. Any problems you foresee with trying the Deore RD and a 11-36 cassette and keeping the current cranks?
The m591 RD has a 45tooth total capacity.
46-38 is 8
36-11 is 25
25 plus 8 is 33.
33 is well under the max tooth total, so you are good there. And the m591 has an official max of handling up to a 34t cog, but Shimano is conservative and 36t large cogs are commonly used on RD with official 34t limits.
You should be good.