front mech compatability

ricktabor1

Will a 9 speed double front mech shift an 8 speed chain?

I am going to run an 8 speed chain on a 9 speed chainset but i'm not sure if I need a new front mech. I currently have a 9 speed Tiagra front mech. Do I need to get the 8 spped Sora or something similar?

Monty Dog

Yes and no

JohnnyAllez

Mech works fine, 8 speed chain won`t work on a 9 speed cassette if you were thinking of doing that? Will be fine with any front chainset though.

ricktabor1

Thanks Johnny,

Thats great news - saves me a bit of cash.

John.T

You asked 2 questions. Monty answered them both, correctly.

Monty Dog

Sorry for the short answer - I was in a bit of a rush - but there's little difference in chain width between 8 and 9 speed - probably within the margin of error of adjustment. The most critical thing with all front mechs is mounting and alignment.

ricktabor1

thanks for the help guys - just got to put my skills as a really poor bike mechanic to the test

Ben6899

Let us know how you get on; any problems post 'em up here.

maddog 2

just run a 9spd chain

shifting at the front will be spot on, as you have a 9spd mech and c/set

and 9spd chain on a 8spd cassette works fine