9spd sti shifter and an 8 piece cassette?

[Cyclopathic]

Will it work or does the 9 speed shifter pull slightly less than the 8 speed cassette gap?

 

[Smurfy]

Sheldon says that the centre-to-centre spacing of the sprockets is different, 4.8mm for eight speed, and 4.34mm for 9 speed.
http://sheldonbrown.com/cribsheet-spacing.html

As far as I can see you need JTEK Shift Mate model #2 to make it work.
http://jtekengineering.com/shiftmate.php

Edit: Assuming you are running Shimano.

 

[Cyclopathic]

Thanks YT.

 

[Smurfy]

Thanks YT.

Are you gonna go for it? SJS cycles is the place for getting a JTEK Shift Mate in the UK.
http://www.sjscycles.co.uk/jtek-shiftmate-model-2-prod19047/
They're a bit expensive, but quick and easy (assuming they work well).

 

[Cyclopathic]

Are you gonna go for it? SJS cycles is the place for getting a JTEK Shift Mate in the UK.
http://www.sjscycles.co.uk/jtek-shiftmate-model-2-prod19047/
They're a bit expensive, but quick and easy (assuming they work well).

Not this time. I'm going to change the shifter instead. Just found an old one that is an 8 speed so it seems the best way to go. I'll probably get a couple of shift adjusters though as they do look like a good solution if buying a 9 speed sti shifter is too expensive.

 

[Cyclopathic]

Not this time. I'm going to change the shifter instead. Just found an old one that is an 8 speed so it seems the best way to go. I'll probably get a couple of shift adjusters though as they do look like a good solution if buying a 9 speed sti shifter is too expensive.

Having said that I've just seen the price. Good lord. It is possible though that I can get them from my wholesale supplier. They don't stock them but might get them in.