6700 shifter ratchet question

yaya
yaya Posts: 411
edited February 2016 in Workshop
Hi all, the ratchet on my Right shifter seems to be going as it randomly slips on upshifts (as in down the cassette).

Is this repairable or replaceable or shall I just look for another shifter?

thx!

Comments

  • keef66
    keef66 Posts: 13,123
    If it is actually the shifter that's knackered, consensus seems to be that Shimano shifters are not practically repairable, and that finding a working one on Ebay is the best bet. That's what I did when my LH triple shifter went tits-up; bagged a nearly new one for £25!

    Worth checking first though that it's not the shift cable fraying inside the shifter. That's usually what's going on when my 105 5600 RH shifter starts playing up.
  • Matthewfalle
    Matthewfalle Posts: 17,380
    Head to SJS Cycles and buy some brand new ones (I think they Sora or Tiagra but new style with hidden cables) for £50 - save messing about on eBay and buying more broken ones. That's what I did.

    Then smash the broken ones with a hammer and throw them into next door's garden.
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • crankycrank
    crankycrank Posts: 1,830
    First try spraying the internals with a solvent such as WD-40, White Spirit, Paraffin, etc. Sometimes it's just a case of being gummed up or having no lube left in the mechanism. Give it a good dousing and run the shifter through the gears. if using WD-40 try not to get any on the rubber covers and clean off any that might come in contact with them as it can degrade the rubber. If this works you'll want to add some more durable lube at some point and blow it out with an air hose, if possible, before adding the lube. Any type of penetrating, med. viscosity lube should work such as gear oil, some chain lubes, possibly the spray on greases, etc. I use Chain L No. 5 lube and has been working fine for over 5k miles so far.
  • peterbob
    peterbob Posts: 46
    Don't throw them over next doors garden too hastily. Try bathing them in solvent. As someone who can successfully take old sora shifters apart and get the springs back together again I can tell you some of the springs that operate the ratchet pawls are very weak and any kind of thick grease or dirt can gum them up. The promising news is that yours sometimes slip, if the pawl was broken (common failure) it wouldn't attempt to shift at all. operate them in solvent, dry and lubricate with some spray grease.
  • yaya
    yaya Posts: 411
    Thank you all for the advice! I have cleaned, degreased, re-lubed it a couple of times already...Going from smaller cogs to bigger ones works fine but the other way around sometimes you just push it and it doesn't click and doesn't move the cable. The cable seems OK but I'll put a new one in just in case before I start telling myself that going to 11 speed 6800 is the only reasonable solution :-)

    Cheers!
  • Matthewfalle
    Matthewfalle Posts: 17,380
    yaya wrote:
    Thank you all for the advice! I have cleaned, degreased, re-lubed it a couple of times already...Going from smaller cogs to bigger ones works fine but the other way around sometimes you just push it and it doesn't click and doesn't move the cable. The cable seems OK but I'll put a new one in just in case before I start telling myself that going to 11 speed 6800 is the only reasonable solution :-)

    Cheers!

    That's what mine did before they before broke completely absolutely miles from home - give it a bash though and see what happens and just upgrade anyway, keeping these as spares for the winter bike build.
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • yaya
    yaya Posts: 411
    BTW am I right in thinking that 11s shifters will work with 10s mechs and will just need 11s rings and cassette?
  • keef66
    keef66 Posts: 13,123
    yaya wrote:
    BTW am I right in thinking that 11s shifters will work with 10s mechs and will just need 11s rings and cassette?

    No, annoyingly they won't. Shimano changed the pull ratio when they went to 11 speed.

    So you need shifters, chain, cassette and both mechs. 10 speed chainset would be OK though.
  • crankycrank
    crankycrank Posts: 1,830
    ^^^^And possibly a new 11sp hub if yours isn't already compatible .
  • sebbyp
    sebbyp Posts: 106
    I had the same on a 5700 sti, turned out to be frayed cable. fine going up but wouldn't release to go down.
  • yaya
    yaya Posts: 411
    Opened it up, flooded it in WD-40, cleaned, lubed, pulled the cable out and it looks like new...cleaned and lubed it and will give it a go...if it still slips then I'll start looking at the upgrade...
    Checked the rear mech as well and the spring still feels springy so I think that one is still OK...
    thx everyone!

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