Front Chainring

[ColinJ]

Actually you could sort it with the limit screws on a shifter anyway. It's brakes I've done it on. Several times ...

No, that's the point - if the cable is too slack then the shifter can't pull the mech as far as the endstop. It took me a while to realise that, and it was pulling the cable by hand that confirmed that the mech could actually go further if it were being pulled further.

 

[KneesUp]

No, that's the point - if the cable is too slack then the shifter can't pull the mech as far as the endstop. It took me a while to realise that, and it was pulling the cable by hand that confirmed that the mech could actually go further if it were being pulled further.

Sorry, I meant if you pulled it too tight, specifically on brakes - when I've done brakes with the adjuster wound in fully I always seem to end up with the pads too close to the rim and no way of adjusting them other than starting again because I've wound the in-line one in ifswim? If you pulled the cable too tight on a mech (so it went too far one way) you could use the limit screws. Anyway, I'm taking this off-topic now.

 

[ColinJ]

Sorry, I meant if you pulled it too tight, specifically on brakes - when I've done brakes with the adjuster wound in fully I always seem to end up with the pads too close to the rim and no way of adjusting them other than starting again because I've wound the in-line one in ifswim? If you pulled the cable too tight on a mech (so it went too far one way) you could use the limit screws.

Oh, yes - I've done that too!

 

[MickeyBlueEyes]

Oh yes!

Think it's fixed! Another new cable, barrel adjuster wound all the way in then pulled hard, really hard before tightening.
Thanks CC'ers for giving me a nudge in the right direction!