Cycling Equipment · Public discussion

Dodgy shifting

Started by Paul J · · Last activity · 9 posts · 1,283 views

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Cycling Equipment
Published
23 November 2003
Last activity
25 November 2003
Original author
Paul J
Posts
9
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  1. Can an out-of-true rear wheel effect shifting performance?
    I've tried adjusting cable tension each way with no real improvement, but I know for sure that my rear wheel is out of whack a bit (gonna get it done this week). It's been a year (8000km) since it was last done.

  2. I wouldn't think so, as long as the hub and cassette etc. is straight it should be ok ?

    It could be the shifter cables are getting natty, or the insides of the cable housings were dirty. After about 7000km my road bike refused to shift quite 100% until I cleaned out the housing and replaced the cable.

  3. Thanks,

    I took the rear derailer apart and serviced it on the weekend and in the process cleaned out the cable housing. The cable should be fine as I only just replaced it about 2000km ago and it still looks new. Shifting hasn't improved much but then i've only had the bike in the stand and haven't exactly test ridden it. I'm still going to get the wheels trued anyhow and see if that makes any improvement.

    Quoted message said:
    Quoted post said:

    Originally posted by rek
    I wouldn't think so, as long as the hub and cassette etc. is >straight it should be ok ?

    Quoted message said:

    It could be the shifter cables are getting natty, or the insides of >the cable housings were dirty. After about 7000km my road bike >refused to shift quite 100% until I cleaned out the housing and >replaced the cable.

  4. an out-of-true wheel should not impact shifting performance. only thing that comes to mind is if the spokes are so out of whack that they may contact the RD when in the largest cog.

    the frame alignment and derailleur hanger alignment can impact shifting, though.

  5. Quoted post said:

    Originally posted by Paul J
    Thanks,

    I took the rear derailer apart and serviced it on the weekend ......

    Quoted message said:

    Why?. Sure you got the pulleys back in the right places?

  6. Quoted post said:

    Originally posted by Paul J
    Thanks,

    I'm still going to get the wheels trued anyhow and see if that makes any improvement.

    Quoted message said:

    Why? Wheel true has nothing to do with it.

  7. Quoted post said:

    Originally posted by boudreaux
    Why? Wheel true has nothing to do with it.

    Because the wheels need staightening. They're obviously a little wobbly when looking down at them going around. This is a different issue. I just thought the two may be connected in some way. I think now that I've got the bike back together I should take it for a ride for a true indication of performance.

  8. Quoted post said:

    Originally posted by Paul J
    Because the wheels need staightening. They're obviously a little wobbly when looking down at them going around. This is a different issue. I just thought the two may be connected in some way. I think now that I've got the bike back together I should take it for a ride for a true indication of performance.

    True the wheels because they need it, not to cure bad shifting.

  9. If the wheel is whacked because of a bent axle it possibly could affect shifting becacause it makes the cassette wobble as it goes around. Otherwise it shouldn't have any effect.

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