Parts Compatibility Question (Derailleur/Shifter/Chainset)

pyro_billy

Hi,

I bought a halfords carerra subway about a year ago with the intention of replacing pretty much every part of it aside from the fork and frame (a bit like Trigger's broom from Only Fools...), and learning about the maintenance etc along the way, and I'm nearly there, however next up is a front derailleur. The Yorkshireman in me has pointed out the following:

http://www.chainreactioncycles.com/Mode ... elID=26662

However, I'm wanting to know whether it'll be compatible with the chainset (Sora 30/39/50) and the shifters (Shimano ST-EF51 EZ Fire Shifters)

Answers/Comments/Questions/Whatthehellareyoudoingman? all welcome.

Jonathan

Cycloslalomeur

No worries with that front mech/chainset/shifter combination, so long as the latter is indexed for a treble.

CarlosDSanchez

It will probably work, but flat bar shifters have a different pull ratio on the front mech (same as a mountain bike) so you actually need

http://www.chainreactioncycles.com/Mode ... elID=84247

or

http://www.chainreactioncycles.com/Mode ... elID=38450

Also, does your shifter have a trim function - ie 2 positions for each chain ring to stop the chain rubbing when you're at the either end of the cassette? If not, you should get mech in my first link as it's designed for 9 speed and the cage will be slightly wider than the mech in the second link which is designed for 10 speed.

Hope that helps.