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gear change - delayed reaction...

Discussion in 'Bicycle Mechanics and Repairs' started by Maz, 17 Apr 2008.

  1. Maz

    Maz Guru

    I've just started re-riding my bike to work this week after 6 weeks off following a bike-off.

    I've now noticed that when I change between gears on the rear cassette, there is a delayed reaction (say 10sec) before the gear engages.

    I have a Spesh Sirrus - maybe I need to adjust the gear cabling or something. Maybe the bike got a bit damaged when I came off.

    Any suggestions?
     
  2. Monkey Boy

    Monkey Boy New Member

    Cycling Plus did a really good gear maintenance spread recently. First port of call is give the whole thing a clean and re-lube. If your delay continues then you might want to fettle / re-index / adjust.
     
  3. domtyler

    domtyler Über Member

    Two new wheels, a complete new chainset and new levers and cables will fix it.
     
  4. OP
    OP
    Maz

    Maz Guru

    Let's face it, it's a write-off. Best get a new bike.
    I've got my eye on your Dolan? ;)
     
  5. 02GF74

    02GF74 Über Member

    weak spring in derailleur - I have this on my commute bike .... .... not a major problem since I don't use those little cogs but .... one day I'll get around to buying a new XT mech......
     
  6. OP
    OP
    Maz

    Maz Guru

    could be, man...bike landed on that side when i fell off.
     
  7. domtyler

    domtyler Über Member

    Have you checked the tyre? It may be warped.
     
  8. John the Monkey

    John the Monkey Frivolous Cyclist

    Location:
    Crewe
    Bike Radar has a decent cable service tutorial in their video bit Maz - that might be worth a try.
     
  9. Dave5N

    Dave5N Über Member

    New cables first!
     
  10. Dave5N

    Dave5N Über Member

    And outers...
     
  11. First lube the cables. If that doesn't work take a good close look at the rear mech, a fall on that side often causes a burr or deformation at the point where the parallelogram meets the main body which restricts it's function. The mech will work going up the block because you are providing the motive power but the spring cant cope with the extra drag on the way down.
     
  12. fossyant

    fossyant Ride It Like You Stole It!

    Location:
    South Manchester
    You sorted it yet ?
     
  13. goo_mason

    goo_mason Champion barbed-wire hurdler

    Location:
    Leith, Edinburgh
    You might have bent the hanger and need to bend it back. I did that recently when the bike fell over as I was opening the flat door - it landed heavily on the derailleur side. I didn't notice the slight bend until spending a long time trying to sort the shifting out - I'd adjust it so it was fine shifting up, but it would stick shifting down and be very hesitant to change, then suddenly do so about 5 - 10 secs later. If I sorted that with adjusting the cable tension, it would then do the opposite and get sticky shifting up instead. I could never get it going smoothly both ways and always ended up with very hesitant shifting one way or another.

    Bent the hanger back and I was able to adjust the shifting perfectly afterwards.
     
  14. OP
    OP
    Maz

    Maz Guru

    No mate. I've lubed the chain and rear derailleur with muck-off, and I still have the problem...moving UP the gears on the rear cassette (i.e. going to a smaller ring) causes a delay in gear engagement.

    I find I have to go UP 2 gears on the rear, then down 1 in order to get into the gear I want.
     
  15. domtyler

    domtyler Über Member

    Your lubing your bike with MuckOff? ;):wacko: