Front derailleur nightmare, HELP PLEASE (shimano sora)

Dan777
Dan777 Posts: 49
edited August 2008 in Workshop
Hi, i'm having major traumas with my front derailleur, i cannot get it to put the chain on the big chainring, i have checked websites, a bike manual and i'm having no joy. i have adjusted both higher and lower screws, experimented with different tension in the cable, changed position of the who derailleur and how it attaches to the frame. no matter what i do the front mech will not shift the chain onto the big ring. its a shiman sora groupset. any help would be greatly appreciated, thanks.
(no doubt its something obvious).

Comments

  • ride_whenever
    ride_whenever Posts: 13,279
    If you've followed the instructions on park tools and have still no luck then it might be an idea to hit up your lbs.
    Neeermad
    Carbon 456
    456 lefty
    Pompino
    White Inbred
  • Dan777
    Dan777 Posts: 49
    thanks for the info, i certainly have followed the instructions on park tools. sorry but when you say hit up the lbs, please explain, thanks.
  • ride_whenever
    ride_whenever Posts: 13,279
    take the bike into your Local Bike Shop, if possible see if you can watch whilst they do it, practice make perfect when setting up gears.
    Neeermad
    Carbon 456
    456 lefty
    Pompino
    White Inbred
  • Dan777
    Dan777 Posts: 49
    i'll have one last go tonight, if no jot local bike shop it is. thanks.
  • onbike 1939
    onbike 1939 Posts: 708
    Try removing the cable and then use your hand to push the FD over to the large ring while rotating the pedals. If this takes your chain over to the large ring then the problem lies with the cable tension or with the H adjustment. I'm assuming that you haven't replaced the Bottom Bracket with one of too long a length and changed the chain-line.
  • Dan777
    Dan777 Posts: 49
    i havent replaced the bottom bracket, or any parts. when riding i noticed problems shifting to the big ring, and i tried to adjust it and all hell broke loose. i'll give what you suggest a try, hopefully it will work!
  • unclemalc
    unclemalc Posts: 563
    I once decided to fiddle with all the things you can fiddle with on a front mech in order to get rid of a bit of chain rub when in the big ring.
    Spent hours (really) faffing about and the bike was needed the next day so , stuck in one gear, it was off to the LBS :shock:
    After some stick :oops: it was fixed in about a minute.
    Sounds like cable tension but I bet its a mm tolerance either way in the top and bottom screw adjusters, either way....
    Spring!
    Singlespeeds in town rule.

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