I've just stripped all cables and chain from a badly kept bicycle and replaced them.

I've correctly adjusted the rear derailleur and it works great.

However, front derailleur which only has 3 gears isn't working as expected.

It takes 2-3 steps on the gear to actually change 1 gears.
The range seems to be 1-6, instead of 3.

The gear is the type that is round, circular next to the handles.


1 Answer 1


This is normal. The procedure is called trimming.

It allows you to move the front derailleur cage a bit to prevent the derailleur cage rubbing on the chain due to the changing angle of the chain when shifting in the rear.

  • There is no rubbing on chain. The problem is front gear has 3 steps. My gear shifter thing, on the handle, does 6 steps. My problem is with that.
    – Phil
    Mar 15, 2016 at 17:51
  • Yes, that's normal. The extra steps are there for accounting for the case where the derailleur cage may rub.
    – Batman
    Mar 15, 2016 at 17:54
  • Thank you. I'd like to accept your answer but I think it better be edited a little with this information. Or do you recon "trimming" is the all and only answer there is?
    – Phil
    Mar 16, 2016 at 16:02
  • That is what trimming means.
    – Batman
    Mar 16, 2016 at 16:33

Not the answer you're looking for? Browse other questions tagged or ask your own question.