Originally Posted by
gear freak
so can get the chain to the correct cogs with a derailleur that you have to reach down between your legs to shift. but you have to use your right to shift two seperate systems. you can not simitaneously double shift like you can with handlebar end derailleur controld,to do this. the shifting will be slow & that why i said half step will not work with this.
Actually I prefer doubleshifting (one hand two shifters) with down tube shifters to any other method of halfstep shifting. I'll guarantee that you would be hard pressed to shift faster or more precisely than I. It all comes with practice and experience. Though I've had barcons on one of my bikes for 15-16 years, I find that I am much better shifting a DT shifter than with the barcons. (friction of course)