10 speed and rapid rise rear mechs

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This topic has 10 replies, 7 voices, and was last updated 9 years ago by Stu_N.

Viewing 11 posts - 1 through 11 (of 11 total)

10 speed and rapid rise rear mechs
mucker
Full Member

Is the end high for my rapid rise love affair, if/when I convert to 10 speed?

Posted 9 years ago

midlifecrashes
Full Member

Keep your mech, use roadie 10 speed flat bar shifters. Job Jobbed.

Posted 9 years ago

qtip
Full Member

Pretty sure that won’t work. Different actuation ratio for Shimano 10 speed road and MTB groups.

Posted 9 years ago

ianfitz
Free Member

if the mech is mtb 9 speed it will work with road 10 speed shifters

Posted 9 years ago

midlifecrashes
Full Member

And rapid rise is a purely Shimano MTB 9 speed phenomenon so it will work fine, just like loads of tourers use 10 speed STI with a 9 speed MTB rear mech and 10 speed cassette.

http://www.chainreactioncycles.com/shimano-tiagra-4600-double-10sp-flatbar-shifter/rp-prod69502

The right hand shifter here will do the job. You can keep whatever setup you have for the front mech and shifter.

Posted 9 years ago

mucker
Full Member

I was actually wondering if it would have the range, big to small cog, so why not a 10 speed MTB shifter?

Posted 9 years ago

midlifecrashes
Full Member

A 10 speed cassette is more or less the same width as 9 speed, but with less space between the cogs. When Shimano changed MTB from 9 to 10, they changed how much cable gets pulled to move from one cog to the next. When they changed roadie 9 to 10 they just made stuff thinner and pulled a bit less cable, making the mech move over a bit less, but by the same amount per mm of cable pulled.

Posted 9 years ago

mucker
Full Member

Ok, brilliant, I take it there are no 10 speed rapid rise mechs?

Posted 9 years ago

asbrooks
Full Member

Take a look at this page
Drivetrain compatibility
It may give you the answer you need. Or may not 😕
It’s a good read either way..

Posted 9 years ago

scaredypants
Full Member

I use a 10sp ultegra flat bar shifter with a 9sp mech. Works fine IME, though I’m sure somebody has said in the past that there are small differences between road and mtb cable pull.

Posted 9 years ago

Stu_N
Full Member

Nope, Rapid Rise is defunct. 9 speed derallieurs are very difficult to come across and hasn’t even been made in 10 speed as far as I know. I’m told new stuff is much smoother shifting so benefits of RR (mainly “on the power” downshifts) are less problematic.

Posted 9 years ago