MTB trigger shifter and road front derailleur

mcstumpy
mcstumpy Posts: 298
edited March 2017 in Workshop
Hi

My road bike was originally a flat bar model, with full tiagra 4600 2x10 (50/34t) and tiagra sl-4600 trigger shifters.

I converted to drop bar and (foolishly) sold the trigger shifters.

I've now acquired a new road bike and am converting the tiagra bike back to flat bar for commuting / light trail/ family cycles (fitting 32mm tyres). I've picked up a r780 10 speed trigger shifter but still need something for the front mech.

In terms of eBay, there are a proliferation of shimano mtb 2 speed trigger shifters available, with prices much cheaper than buying a road specific trigger. I've searched the net for info re shimano mtb shifter/ road front mech compatibility and views are mixed.

Does anyone know definitively, or have experience of, compatibility between shimano mtb trigger shifter and tiagra road compact front mech?

Thanks