Adjusting front mech 'middle' position

danlightbulb

Hi all,

Ive been adjusting my bike today, as its a few months old so want to adjust the gears make everything nice and smooth.

Ive done the rear mech fine, and i've done the front mech small and large chainrings fine, but on the middle chainring and the rear large chainring I'm getting the chain rubbing the inside plate of the front mech.

The adjusting screws don't seem to make any difference to this middle position.

FYI there is also slight rubbing when on the inside front ring / outside rear ring, and also on the outside front and inside rear, but i guess this is unavoidable due to the chain angles.

Front mech is shimano tourney (rockrider 5.2).

Thanks

supersonic

Check the mech is at the right height, anfle and is not bent. Then is a case of carefully adjusting cable tension.

nicklouse

So you need to reset the top or the bottom as all you can do is reduce the tension.

danlightbulb

Thanks guys that's got it now. wow slightest little turn on the cable tension makes a massive difference to the middle position it seems.

supersonic

Indeed ;-). Just make sure it shifts ok to the other rings though! Is a balancing act, but the start position MUST be just about perfect.