Originally Posted by
Panthers007
By the way: Shimano publishes that the Ultegra RD has a max size large gear of 27. That's garbage. People have run them with 32 in the rear - perfectly. Shimano must lose a lot of business giving out erronious numbers. I just found another example of Shimano's idiocy in this department. Best advice when it comes to Shimano's specifications - Don't Believe It.
Hope this helps.
Alright, since you seem to know better than shimano on their own gear. How about telling the class when the derailleur won't even be compatible with a cog size of 27 or even smaller? Can you tell us why the derailleur may actually handle more than it's stated capacity?
Do you even know why shimano doens't publish every single number that is required in order to determine max cog size on their rd's?