Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member jberenyi's Avatar
    Join Date
    Dec 2005
    Location
    West Haven, Utah
    My Bikes
    Lynskey Level 3 Custom, De Bernardi SLX, Felt F1C, Burley Duet Tandem
    Posts
    501
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Are my chain rings worn?

    Does my large chain ring need replacing? These supposedly have about 10K miles on them. They are DA 7800's. Before I spend the big bucks I need to know all your opinions. Thanks.
    Attached Images Attached Images

  2. #2
    I let the dogs out AlphaDogg's Avatar
    Join Date
    Apr 2011
    Location
    Boulder, CO
    My Bikes
    2011 Fuji Roubaix 1.0, 2003 Ti Merlin Solis, & 1994 Raleigh MT200
    Posts
    1,925
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    They're worn, but not to the point of replacement. Ride them for another 10K miles.
    Quote Originally Posted by Andrew R Stewart View Post
    Weird spell/word check. "***" is "***". I'll never understand this computer. Andy.

  3. #3
    Senior Member miamijim's Avatar
    Join Date
    Aug 2003
    Location
    Tampa, Florida
    Posts
    11,811
    Mentioned
    17 Post(s)
    Tagged
    1 Thread(s)
    Assuming you have a good chain (not stretched beyond spec) shift into the big ring. Grab the chain at the 3 o'clock position and pull it away from the ring. Can you see air between the tips of the teeth and the chain?

    No? Chianring is good.

    Way back in the day we had alot of customers ask us about worn chainrigs, this was right when Shimano began profiling teeth for enhanced shifting.
    WWW.CYCLESPEUGEOT.COM 2005 Pinarello Dogma; 1991 Paramount PDG 70 Mtb; 1976? AD Vent Noir; 1989 LeMond Maillot Juane F&F; 1993? Basso GAP F&F; 1989 Terry Symmetry; 2003 Trek 4700 Mtb; 1983 Vitus 979

  4. #4
    Senior Member zukahn1's Avatar
    Join Date
    Oct 2011
    Location
    Denver Co
    My Bikes
    Current 79 Nishiki Royal, Jeunet 620, 59 Crown Royal, notable previous bikes P.K. Ripper loop tail, Kawahara Laser Lite, Paramount Track full chrome, Raliegh Internatioanl, Motobecan Super Mirage.
    Posts
    4,564
    Mentioned
    8 Post(s)
    Tagged
    1 Thread(s)
    They look a little worn but far from worn out you should be able to get another 10k out of these. Most high end chainrings outlast the bike if not bent.

  5. #5
    7-speed doomsday prepper ThermionicScott's Avatar
    Join Date
    Aug 2011
    Location
    CID
    My Bikes
    1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX
    Posts
    8,008
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Keep running it until it skips. And be more diligent about replacing your chain when it has stretched -- this is how a chainring should look when it has LOTS of miles on it:

    Last edited by ThermionicScott; 08-30-12 at 10:52 AM.
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

  6. #6
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    39,847
    Mentioned
    25 Post(s)
    Tagged
    0 Thread(s)
    Start shopping for a new chainring in the mean time..
    rule of thumb: 2 chains , new cassette , 2 more chains , new cassette again,
    then a new set of chainrings.

    YTMV ... your thumbs may vary

Posting Permissions

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