2

The front derailleur cable is on the path of the pedal.

Derailleur cable is in the path of the pedal (right of picture):

derailleur cable is in the path of the pedal (right of picture)

The amateurish solution of pulling it back with a loop requires a solution itself to stop the holding loop from sliding.

Hackish, unworkable "solution":

Hackish, unworkable "solution"

If I google "front derailleur cable hits pedal" I get what I perceive as a low-quality solution (shorten the cable and crimp again; I like slacks).

What would you do? Unwind the bolt a little and turn the cable either up (towards the sky) or down (towards the ground) and tighten again, trying to hit the exact spot and eliminate the need for subsequent tuning? Is that a good way to go? If yes, sky means less surface to hold the cable; ground means excessive twist on a cable with a blueish plasticky coating (for rust prevention?) that looks like it doesn't like excessive bending.

Update, following Swifty's answer:

Here is my candidate process:

  1. Use Sharpie to mark where the cable is set.
  2. Use Sharpie to mark the sky-side setting of the bolt (since I don't have a torque wrench, anywhere from the 11am to 1pm settings will do for a reasonable rewind torque).
  3. Loosen the cable. The cable will be considerably less taut (thanks, Argenti Apparatus) with the chain on the smaller chainring. (Is this enough to ensure the cable will not gain too much the moment I unwind the bolt? I don't see a barrel adjuster; should there be one under the rubber surrounding the shifters?)
  4. Unwind, turn cable and wind back.

Could you comment?

  • Before undoing the cable, change to the smaller chainring, use the barrel adjuster to slacken the cable. You'll likely have to re-adjust the derailleur when you re-attach the cable. See Park Tool's comprehensive guide: parktool.com/blog/repair-help/front-derailleur-adjustment – Argenti Apparatus Apr 16 at 16:54
  • 1
    This is fairly common. What I generally do is cut off the cable (to a length that is as long as possible without interfering with something) and then install a new cable end. – Daniel R Hicks Apr 16 at 18:28
4

Depending on the issue and excess length you might bend the cable out of the way, you might shorten it, or you might release and reattach it.

In this case the cable could be released and pulled down more, behind the clamping plate there is a little groove that the cable is not currently sitting in, see the extract below from the dealer's manual for R3000 derailleurs, showing the cable path.

If then it still hits something you could shorten it a touch (if you have the means to re-crimp the end). The blue coating is a friction reducing coating, it doesn't do anything at this end of the system so that doesn't matter.

You want to shift down into the lowest setting on the derailleur before releasing the cable. You can check if the derailleur is lined up correctly in height and angle and that the support screw is engaged. You can refer to the sections in the dealer's manual below, and/or online guides.

I wouldn't bother to mark the bolt before releasing, you'll need to release it as far as necessary and after reattaching it could be in a different position when it is fastened tightly enough. With the cable tucked underneath properly it will probably allow the bolt to screw in further before tight.

Any barrel adjuster should be easily visible along the housing. If you don't have one that is a little more challenging, you'll have to pull some tension on the cable as you attach it. One hack is to tighten the low limit screw by a known amount (like one turn) before attaching the cable. then when cable is secure, releasing the low limit screw by the same known amount, allowing the cable to tighten.

Extract from Shimano R3000 dealer's manual https://si.shimano.com/pdfs/dm/DM-RBFD001-01-ENG.pdf

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

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