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Hello
Building my first bike so having to think a little harder about stuff I've never quite thought about before! Going XT and trying to figure out best ratios for my build. I ride around Bath: super steep hills and clay soil. It's a 650b bike, 40/30/22 on the crank and am trying to choose what ratios to go with at the back. I have a choice of 11/32 , 11/34, or 11/36. Am I right in thinking the 11/36 option will be an easier ride?
thanks for the help
adam
Correct. No real reason to go for anything but 11-36 unless you have issues with the big jumps.
Def go with 11-36. Only a roadie would consider the "jumps" big.
You'll certainly appreciate the better range of gearing, you won't give the difference between each gear a second thought.
If you're building this yourself and planning on running three rings on the front I would ask what length cage of xt mech you're planning on using. You are using a long cage mech aren't you?
I'm sure someone will be along shortly to talk you out of running three rings on the front.
Smatkins,
Good shout. I have the choice of these two and was going to go for the 786.
..and its STEEP round here.. Need them rings!
Shimano XT Rear Derailleur
RD-M781 10-speed SGS
- Dyna-Sys component Shadow Rear Derailleur Total capacity: 43T(SGS)
- Guide pully: Sealed bearing
- Tension Pully: Sealed bearing
Shifting Action: Top Normal SHADOW
Maximum Sprocket: 36T
Minimum Sprocket: 11T
Front Difference: 18T
Total Capacity: SGS 43T
Weight: ca. 234g
RD-M786 RD+ 10-speed SGS
XT now offers a Shadow Plus rear derailleur for trail riders with a direct mount option. Shadow Plus technology reduces chain slap and chain drop while creating a more stable drive train that is dramatically quieter.
The internal clutch system maintains chain tention througt the roughest of terain, fully adjustable with included tool and built in on/off switch round out the Shadow Plus RD.
Details:
- Shadow-Plus technology with stabilizer
- The stabilizer reduces derailleur hitting the chain and prevents chipping
- Easier and more efficient than chain devices with rollers
- Direct Mount ready
Gears: 10-speed
Material: Aluminium
Version: long (SGS)
Max large sprocket: 36 teeth
Min large spocket: 32 teeth
Smallest sprocket: 11 teeth
Front chainwheel teeth differ