Originally Posted by
FBinNY
yes, it's normal. Front sprocket separation is greater than that of the rear, so the derailleur has farther to move. Also the geometry is different. What matters is the trim (chain doesn't rub the cage) on each sprocket, and the crispness of the shifts. If these are on target, than it's adjusted correctly.
That's what I thought at first but I'm not so sure now. I just checked Shimano's M591 Shifter Manual and it seems like only 1x distance is required for the larger gear. The above 2 pictures were taken from their manual, and the bottom picture in red is what I'm experiencing.
http://bike.shimano.com/media/techdo...9830747488.pdf