10 speed mech with 8 speed cassette.

[cycling weakly]

Will a 10 speed XT mech work with an 8 speed cassette & shifter? I believe 8 speed & 9 speed are interchangeable but I don't know if a10 speed mech requires a different amount of cable pull.
Steve.

 

[Deleted member 4366]

It depends what you mean by work. i run a 7 speed freewheel with 9 speed changer and mech. you have to do an extra click in the middle gears and often, you need to click one past, then one back. That doesn't bother me.

 

[willywombat]

no ..10 speed mech won't work with 9speed /8 speed shifters as the pull ratio is different. I know from experience having tried it ( 9sp shifters ) and google will confirm . You may be able to adjust the cable attachment point slightly to adjust the geometry/pull but easier just to change the mech or shifter .

 

[Steve UKLSRA]

This is what WW is referring to...the gold block changes the pull ratio (in this case a Shimano Zee Shadow+ 10sp derailleur with a 9sp cassette/shifter)....9 or 8sp derailleurs are not expensive, but you can't get one with the clutch mechanism...IIRC

 

[Steve UKLSRA]

Steve/Cycling Weakly...I have servicable 8 and 9 speed derailleurs in my spares bin if you want one to suit and can't be bothered finding one on the www ...you can choose one foc whilst I program your BBS if you want

 

[willywombat]

interesting that gold block...never seen one before but i don't delve in 10 speed much. sometimes attaching the cable in a slightly different position can solve the problem but you need to know where!