Looking for a new rear mech, probably X9 type 2 to go on the new build.
I'm running 2x10 will I get away with a medium cage mech or go for the long?
Cheers 🙂
Check the spec, count the teeth.
I just put a short cage road mech on a 1x9 full suss bike and it works nicely.
Cassette is 36t.
Am I right in thinking that if you run a double up front a medium cage will do?
Long cage for 3x
Med cage for 2x
Short cage for 1x
Long cage for 3x
Med cage for 2x
Short cage for 1x
That was my understanding, I just wanted to make sure.
Thanks for that. 🙂
Add the teeth difference at the back (presumably 36-11=25) to the teeth difference at the front (about 12 to 14 on a SRAM double is it?) getting 27 to 39. Find the shortest caged mech that'll do 39 teeth and check it's good for a 36t largest sprocket. Buy. Fit. Fettle.
It's probably medium, but Shimano are suggesting long. Not sure I'd believe them.
I found it on the SRAM website aswell last night. States the X9 type 2 10 speed medium is for use with 2x10.
According to United Bicycle Institute:Determine Maximum Chainring Difference by subracting the number of teeth in the smallest chainring from the number of teeth in the largest chainring
Determine Maximum Cassette Cog Difference by subtracting the number of teeth on the smallest cassette cog from the number of teeth on the largest cassette cog
Determine Total Drivetrain Capacity by adding Maximum Chainring Difference to the Maximum Cassette Cog Difference
Record the Maximum Cassette Cog (the number of teeth on the largest Cassette Cog)
For Shimano:
SS - Short Cage Road Double - Maximum Cassette Cog is 27 and Total Capacity is 29
GS - Medium Cage MTB/Road Triple - Maximum Cassette Cog is 34(MTB)/27(Road) and Total Capacity is 33(MTB)/37(Road)
SGS - Long MTB - Maximum Cassette Cog is 34 and Total Capacity is 45
For SRAM:
Short - Maximum Cassette Cog is 34(MTB)/28(Road) and Total Capacity is 32(MTB)/31(Road)
Medium - Maximum Cassette Cog is 34 and Total Capacity is 37
Long - Maximum Cassette Cog is 34 and Total Capacity is 45
For Campagnolo:
Short - Maximum Cassette Cog is 26 and Total Capacity is 27
Medium - Maximum Cassette Cog is 29 and Total Capacity is 36
Long - Maximum Cassette Cog is 29 and Total Capacity is 39
NOTE - THIS INFORMATION IS SUBJECT TO CHANGE BY MANUFACTURER
And a great source for all of this is Sutherland's 7th edition
Hope that helps
The medium cage SRAM X9 type 2 is ok for a 36t cassette.
As others have said you'll need medium cage for 2x10, but for the naysayers, my short cage X0 works fine with my 36t cassette set up 1x.
Medium for 2x10 for sure - I got rid of mine recently and went to short cage for a 1x10 set up