Mountain bike shifter compatibility with road deraillieurs

[Nibor]

HI Long story short a friend of mine needs to convert her drop barred bike to flat bars, she is running 2 x 9 Shimano sora on the bike and I have a set of 3 x 9 Acera shifters in the spares box. Does anybody know if this will work? I could suck it and see but i would rather get the bits together I know will work beforehand rather than doing a suck it and see.

Thanks in advance.

 

[raleighnut]

HI Long story short a friend of mine needs to convert her drop barred bike to flat bars, she is running 2 x 9 Shimano sora on the bike and I have a set of 3 x 9 Acera shifters in the spares box. Does anybody know if this will work? I could suck it and see but i would rather get the bits together I know will work beforehand rather than doing a suck it and see.

Thanks in advance.

Change the rear mech to an Acera 9 speed?

 

[Nibor]

would the front mech work?

 

[C R]

You needed to check the pull ratios, I think they are the same for mtb and road derailleurs up to nine speed (Shimano) but looking at the data sheet should confirm.

 

[raleighnut]

would the front mech work?

I'd think so.

 

[DCBassman]

The rear should be fine.

 

[si_c]

Front should work OK, you'll need to set the high and low stop points properly so it doesn't overshift. You'll have an extra click - but it won't act like the trim on the dual shifters will and it might require a little tweaking to get it to where you're happy, but it should be possible.

The rear will work like normal.

 

[Cycleops]

You needed to check the pull ratios, I think they are the same for mtb and road derailleurs up to nine speed (Shimano) but looking at the data sheet should confirm.

They are. I went the other way from flat bar Deore nine speed to drops with nine speed Sora.