Advertise on Bikeforums.net



User Tag List

Results 1 to 10 of 10
  1. #1
    Senior Member
    Join Date
    Jun 2008
    Location
    Orlando, FL
    My Bikes
    Trek SU100, Surly Cross Check
    Posts
    392
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    New chain, old cassette, chain shift under load

    As the title says, I recently got a new chain to replace the old one but left the cassette. Whenever I shift under load, or sometimes even on a hard start, the chain will either "crunch" or jump between gears rather than go to the gear that I want. I'm assuming (probably correctly) that it is the cassette, but I was hoping to check with good 'ol BF to see if it's some other problem I'm overlooking instead.

    The chain runs fine when kept in the same gear, so it's not a stiff link or anything like that. I did use the old SRAM powerlink, so that may have a different pitch. However, my chain problems don't seem location specific.

  2. #2
    .
    Join Date
    May 2006
    Location
    Hillsboro, Oregon
    My Bikes
    Moots Psychlo-x ybb, Soma ES, Trek 950
    Posts
    3,783
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    How old is the cassette? Is the chain the same speed (or roughly) as the cassette? For example, is the cassette a 10 speed cassette, but the chain is a 8/9 speed? Did it work fine before the chain change? It may be as simple as you may have bumped the derailleur and it needs to be adjusted via the barrel adjuster.
    Demented internet tail wagging imbicile.

  3. #3
    Senior Member
    Join Date
    Jun 2008
    Location
    Orlando, FL
    My Bikes
    Trek SU100, Surly Cross Check
    Posts
    392
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The cassette is about two years old, but ridden only moderately (<50 miles a month?) Chain is 9-speed, and so is the cassette. The old chain was doing this as well, which is what actually prompted me to change the chain. It can't be the derailleur either, as I use friction shifters.

  4. #4
    I'm Carbon Curious 531phile's Avatar
    Join Date
    Aug 2005
    Location
    Earthquake Central
    My Bikes
    Enough
    Posts
    2,195
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sounds like the cassette is worned as well. I bet you worn it by running a worned chain. Time to replace it. This is the main reason why shops tend to replace both the chain and the cassette at the same time.

    Quote Originally Posted by avner View Post
    I loled. Twice. Then I cried. Then I rubbed one out and cried again, but thanks for sharing.

  5. #5
    Senior Member
    Join Date
    Aug 2007
    Location
    NorCal
    My Bikes
    2009 Surly Cross Check Frankenbike
    Posts
    530
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Shifting under load is never going to work well. But a big load, like a "hard start" could flex your frame and cause some issues.

    I think the first question to ask is how does the bike shift under normal conditions? If that is ok then your problem is probably not your chain and cassette and you can start looking at things like shifting technique, frame flex and cable friction.

  6. #6
    Senior Member
    Join Date
    Jun 2008
    Location
    Orlando, FL
    My Bikes
    Trek SU100, Surly Cross Check
    Posts
    392
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    So what's the advantage of paying twice as much for this:
    http://www.jensonusa.com/store/produ...ette+2010.aspx

    Rather than just getting this:
    http://www.jensonusa.com/store/produ...ette+2010.aspx

  7. #7
    Senior Member
    Join Date
    Jun 2008
    Location
    Orlando, FL
    My Bikes
    Trek SU100, Surly Cross Check
    Posts
    392
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Al Criner View Post
    Shifting under load is never going to work well. But a big load, like a "hard start" could flex your frame and cause some issues.

    I think the first question to ask is how does the bike shift under normal conditions? If that is ok then your problem is probably not your chain and cassette and you can start looking at things like shifting technique, frame flex and cable friction.
    Bike shifts all right when done perfectly (i.e. lighten load for shift). If I don't lighten the load by much, it'll occasionally skip.

  8. #8
    Galveston County Texas 10 Wheels's Avatar
    Join Date
    Nov 2007
    Location
    In The Wind
    My Bikes
    GTO
    Posts
    25,863
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    [SIZE=1][B]What I like about Texas[/B]
    http://www.youtube.com/watch?v=PGukLuXzH1E

    Set F1re To The Ra1n ( NY Night Rain Ride)
    http://www.youtube.com/watch?v=W7jfcWEkSrI

  9. #9
    Senior Member Corben's Avatar
    Join Date
    May 2008
    Location
    Sacramento
    My Bikes
    2014 Dawes Lightning 1000.1990 Schwinn Voyuager. 1997 specialized Crossroads Hybrid.
    Posts
    367
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    When I mash down on the pedals on my hybrid the chin slips on the cassettes 2 lowest gears. "They're loose!" LBS wrench tells me. I could barely notice it but they were. I screwed them up somehow swapping them out with another set. Spaced out a spacer i guess. You live. You learn.

  10. #10
    Senior Member JonathanGennick's Avatar
    Join Date
    Apr 2007
    Location
    Munising, Michigan, USA
    My Bikes
    Hifi 29er, Stumpy 29er, Rockhopper 29er, ...
    Posts
    1,762
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by itsthewoo View Post
    So what's the advantage of paying twice as much for this:
    http://www.jensonusa.com/store/produ...ette+2010.aspx

    Rather than just getting this:
    http://www.jensonusa.com/store/produ...ette+2010.aspx
    Less weight. You get less for your money with the more expensive model. In the 11-34 models, the 970 is 42 grams lighter. Possibly some of the material is slightly different to account for that weight difference.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •