10 speed shifters, 9 speed cassette??

gary.hounsome

Hi all,

Currently have Tiagra 9 speed shifters and cassette, is there any reason a set of 105 shifters wouldnt work with the 9speed cassette and chain?

Would it be a case of not using the extra gear in the shifters? Just for a month or so until a new cassette and chain arrives.

Thanks,

Zendog1

It will not work.

The amount of pull required is completely different for 9 and 10spd. It's difficult trying to explain why!

smoggysteve

For the sake of a month is it really worth the fu@k around? You will never get clean gears up and down the cassette. I would wait until you have everything and change it all at once.

greasedscotsman

I asked a similar question in workshop a while back...

viewtopic.php?f=40004&t=12776826&hilit=10+speed

Never got round to trying it as I put some 9 speed downtube levers on instead. But as I understand it, you just need to put the cable the other side of the bolt on the read mech. Worth a try, if it doesn't work then just get a new cassette and chain.

grim168

Probably doesn't help you but I have 10 speed campag shifters on my tourer with a 9 speed xt drivetrain

freezing77

gary.hounsome wrote:

Hi all,

Currently have Tiagra 9 speed shifters and cassette, is there any reason a set of 105 shifters wouldnt work with the 9speed cassette and chain?

Would it be a case of not using the extra gear in the shifters? Just for a month or so until a new cassette and chain arrives.

Thanks,

Look here for a comparison of sprocket spacing between shimano 9 and 10 speed and any other cassettte you would care to mention.

http://sheldonbrown.com/cribsheet-spacing.shtml

crankycrank

greasedscotsman wrote:

I asked a similar question in workshop a while back...
viewtopic.php?f=40004&t=12776826&hilit=10+speed

The Jtek Shiftmate mentioned is what you need, #2 version and they work very well. http://jtekengineering.com/shiftmate.php Although the cost is not too much less than just buying a new 10sp Tiagra cassette.