blackburn1973
Well-Known Member
So, I have an XT 9-speed cassette with the Wolf Tooth conversion to make it 10 speed 11-42 and a 36-tooth front ring. Will the medium cage size work for this or do I need the long one?
Shimano Shadow Derailleur Compatibility
- Thread starter blackburn1973
- Start date
Karate Monkey
Well-Known Member
The secret of the derailleur:
They have a listed capacity, in teeth. To find out what you need, you take the difference between the largest/smallest cassette sprocket, and add that to the same from the chainrings, if there are multiple.
Ex: (42-11)+(36-36)=31. Your derailleur needs to have a capacity of at least 31 teeth...though Shimano is conservative with their numbers, so you would be able to fudge a couple of teeth, at least.
They have a listed capacity, in teeth. To find out what you need, you take the difference between the largest/smallest cassette sprocket, and add that to the same from the chainrings, if there are multiple.
Ex: (42-11)+(36-36)=31. Your derailleur needs to have a capacity of at least 31 teeth...though Shimano is conservative with their numbers, so you would be able to fudge a couple of teeth, at least.
Last edited:
blackburn1973
Well-Known Member
Thanks @GSTim and @Karate Monkey. Just what I needed!