front mech limit adjust?

barty81

hi, just fitted a new front mech. put it in little ring up front,big on back then adjusted it by the 3mm gap rule, no problems. then went to small on back and bid up front, but it seems the mech will will not move out anymore that is allowed and im stuck with it rubbing against the cage. Is this normal? or am i doing something wrong? replaced my bottom bracket a while back is it possible i have not put enough spacers on driveside? running 3 rings up front with a triple slx front mech

The Northern Monkey

some rubbing in some combos is unavoidable.. have you replaced with the same mech?

barty81

replaced a deore with a slx and but had the same problem with the deore

The Northern Monkey

Its fine then as long as you can use all gears! (note that using big/big and little little combos are usually advised to be avoided)... as said, you'll always get a bit of rubbing in some gear combos!

barty81

cheers. just a bit anoying when the setup instructions tell ya how to set it up when its not possible to do it.not to bothered anyhow cause i run middle ring all the time and no rubbing there.

BigStu2

Just checking, did you remove the plastic "pro set" before you set up the derailleur as it presets the mech to the large chainring making it almost impossible to have your chain on the small chain ring during installation, if you removed it and set the mech over the small chain ring and just eyed up 3mm over the large chainring then the mech will be too low.

barty81

i did remove it before installation but pulled it forward to adjust the height.i now know what that plastic thing was for thanks.