Advertise on Bikeforums.net



User Tag List

Page 1 of 2 12 LastLast
Results 1 to 25 of 26
  1. #1
    Senior Member
    Join Date
    Aug 2006
    Location
    Brookline, MA
    Posts
    514
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Chain and cassette are shot - replace chainrings too?

    I waited a bit too long to replace the chain on my commuter, and now both the chain and the cassette are shot. They're not so far gone that I can't ride on them until replacement parts arrive (i.e. no skipping, yet), but the chain-wear gauge does fall rather easily into the gap.

    So...question: Do I need to replace my chainrings along with my freewheel? The bike is a double, but I use the big ring almost exclusively.
    Last edited by GRedner; 07-29-07 at 11:52 AM. Reason: Clarified the topic

  2. #2
    cab horn
    Join Date
    Jun 2004
    Location
    Toronto
    My Bikes
    1987 Bianchi Campione
    Posts
    28,295
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by GRedner View Post
    So...question: Do I need to replace my chainrings along with my freewheel? The bike is a double, but I use the big ring almost exclusively.
    Yes.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  3. #3
    Senior Member matimeo's Avatar
    Join Date
    Feb 2006
    Location
    Beaverton, OR
    My Bikes
    It's the motor, not the bike, right?
    Posts
    710
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I don't know. I've never changed chainrings on a bike unless they were rendered useless by a crash or something. I just upgraded a bike and used an old shimano 105 crankset with chaingrings that were probably 10+ years old and they work just fine with a new cassette and chain. The same is not the case with a worn cassette and a new chain, you get slippage. My experience is that nothing will happen if you stick with the old rings.

  4. #4
    Senior Member
    Join Date
    Jul 2007
    Posts
    69
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Chainrings and casette wears down because of the chain. Replace chain, SRAM with EzLink. Then take your chain off every 100 miles or so and wash it well.

    It's clean when you feel no sand or dirt inside the chain, when you take it in both your hands and bend it side to side slightly. When dirt you'd feel like there is dirt inside the chain. Clean until it feels like brand new chain. Then lube.


    Cross chaining, bad chainline, cheap chainring are also factors.

  5. #5
    Pwnerer Wordbiker's Avatar
    Join Date
    Jun 2005
    Location
    Pagosa Springs, CO, USA
    My Bikes
    Road, MTB, Cruiser, Chopper, BMX
    Posts
    2,900
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    In my experience, chainrings wear about two to three times slower than cogs and chains.

    The torque load is distributed over a greater number of teeth, and on a double, you are not "shifting through" any chainrings as with a triple. With triples the middle chainring seems to get the most abuse as you can't skip over it to go from large to small, or vice versa.

    I'd replace the cassette and chain, then replace the chainrings if necessary.
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

  6. #6
    Senior Member
    Join Date
    Aug 2006
    Location
    Brookline, MA
    Posts
    514
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for the feedback. I'll probably go ahead and replace the chain and cassette, and see how things go.

    I will attempt to procure replacement chainrings in the event that they are needed. I need 144mm BCD rings though, which all seem to sell for big $$ (at least, bigger than I want to spend on a commuter bike). Argh.

  7. #7
    Pwnerer Wordbiker's Avatar
    Join Date
    Jun 2005
    Location
    Pagosa Springs, CO, USA
    My Bikes
    Road, MTB, Cruiser, Chopper, BMX
    Posts
    2,900
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Good call.

    I can't say you won't need the chainrings. A client and friend of mine that is a high-mileage roadie replaces cassettes and chains together nearly every year, and chains inbetween cassette replacements. He'd never replaced his chainrings and when I recently installed some new Salsa rings, he came back and said his front shifting was better than it'd ever been before, even when new.

    At least you can spend some time now to find a deal on the chainrings.
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

  8. #8
    Senior Member
    Join Date
    Oct 2005
    Posts
    5,437
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Chainrings last a long time, especially if you change the chain regularly. Eventually, you will see that the CR teeth look shark-finned, that means they are starting to wear. Sure fire way to determine is to put a new chain on and if you hear noise from the CR, time to replace.

    I've had chainrings last 10 years+ with regular riding.
    Il faut de l'audace, encore de l'audace, toujours de l'audace

    1980 3Rensho-- 1975 Raleigh Sprite 3spd
    1990s Raleigh M20 MTB--2007 Windsor Hour (track)
    1988 Ducati 750 F1

  9. #9
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,938
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by operator View Post
    Yes.
    No.

  10. #10
    aspiring Old Wart Sluggo's Avatar
    Join Date
    Oct 2005
    Location
    Left bank, Knoxville TN
    Posts
    455
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by HillRider View Post
    No.
    I agree. My experience is that chainrings last a very long time.

  11. #11
    Member
    Join Date
    Mar 2004
    Posts
    31
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Have 100000+ miles on my fleet of bikes, and have never replaced a chainring. I still have Biopace on some of them.

  12. #12
    Senior Member barba's Avatar
    Join Date
    Nov 2005
    Posts
    4,083
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Unless I see that they are obviously worn (shark fin teeth, etc.), I leave them alone.

  13. #13
    Senior Member capwater's Avatar
    Join Date
    Dec 2004
    Location
    Quahog, RI
    My Bikes
    Giant TCR Comps, Cdale R5000, Klein Q-Pro, Litespeed Siena, Piasano 105, Redline Conquest Pro, Voodoo Bizango, Fuji Aloha
    Posts
    1,509
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by barba View Post
    Unless I see that they are obviously worn (shark fin teeth, etc.), I leave them alone.
    +1 on the sharkfin appearance. They do last a long time, but folks that hammer on their rings will wear them out much sooner than a tourer.

  14. #14
    Senior Member
    Join Date
    Apr 2006
    Location
    Vero Beach FL
    Posts
    1,103
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Sluggo View Post
    I agree. My experience is that chainrings last a very long time.
    +1 Purchased a 53 tooth Ultegra chainring once thinking I'd need it some day. Many miles later, and I'm still sitting on that ring.

  15. #15
    cab horn
    Join Date
    Jun 2004
    Location
    Toronto
    My Bikes
    1987 Bianchi Campione
    Posts
    28,295
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Sluggo View Post
    I agree. My experience is that chainrings last a very long time.
    Thanks for missing the point.

    How can you make a diagnosis without even seeing the bike? You guys clairvoyant all of a sudden?
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  16. #16
    Cries on hills supton's Avatar
    Join Date
    Jun 2007
    Location
    Central NH
    My Bikes
    2007 Trek Pilot 1.2, 1995 Gary Fisher Avantage, 1985 Panasonic Sport 1000, 1969 Raleigh Sprite 5
    Posts
    873
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    What about shifting ramps? Or whatever these are called: I've looked at the Alivio crankset on my bike, and there are these notches running down some of the valleys, in four locations. The notch is flared a bit, presumably to help the chain ride up on upshifts (this is an MTB, so big jumps). The teeth near there look very shark tooth, but the rest just look somewhat worn. I have ridden the bike with a very worn chain in the past, and the current one is worn out also (but not as badly).
    '07 Trek Pilot 1.2
    '85 Panasonic Sport 1000 (beater, gone now)
    '69 Raleigh Sprite 5 speed (AW instead of S5, for now)

  17. #17
    Pwnerer Wordbiker's Avatar
    Join Date
    Jun 2005
    Location
    Pagosa Springs, CO, USA
    My Bikes
    Road, MTB, Cruiser, Chopper, BMX
    Posts
    2,900
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by operator View Post
    How can you make a diagnosis without even seeing the bike? You guys clairvoyant all of a sudden?
    How can you?

    All that was related was experience. Chainrings last a lot longer than most people think...apparently including you.

    And yes, my telepathetic powers are formidable.
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

  18. #18
    Senior Member Tapeworm21's Avatar
    Join Date
    Jan 2007
    Location
    Berkeley
    My Bikes
    2010 Tarmac SL, 2007 Specialized Langster, 2013 Fairdale Weekender, 2013 Fairdale Coaster, 1986 Bridgestone 600, 1972 Schwinn Heavy Duty, 2014 Surley Long Haul Trucker
    Posts
    2,258
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by operator View Post
    Thanks for missing the point.

    How can you make a diagnosis without even seeing the bike? You guys clairvoyant all of a sudden?
    Like already said.... you too made a diagnosis as well. A wrong diagnosis, but a diagnosis.
    2009 Specialized Tarmac Pro SL SRAM
    http://uplandsg.com/images/prodlogo_capoformaS.gif

  19. #19
    Senior Member
    Join Date
    Aug 2006
    Location
    Brookline, MA
    Posts
    514
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'm not sure why there's attitude seeping in from all corners, but it doesn't help anything.

    The chainrings don't look worn. They're only one chain old, so to speak (and the small ring has barely been touched - I may replace it with a bigger one eventually). I did once ride a drivetrain on another bike right into the ground - the jockey wheels were so worn that the tips of what once had been gear teeth were needle-sharp! By comparison, my current commuter is newer-than-new

    A tangentially related question - does cross-chaining increase wear on chains/cassettes/rings?

  20. #20
    Elite Fred mollusk's Avatar
    Join Date
    Aug 2005
    Location
    Edge City
    My Bikes
    2009 Spooky (cracked frame), 2006 Curtlo, 2002 Lemond (current race bike) Zurich, 1987 Serotta Colorado, 1986 Cannondale for commuting, a 1984 Cannondale on loan to my son
    Posts
    10,640
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by GRedner View Post
    A tangentially related question - does cross-chaining increase wear on chains/cassettes/rings?
    Yes, yes, and yes.
    I'm the world's forgotten boy. The one who's searchin', searchin' to destroy.

  21. #21
    Newbie
    Join Date
    Jul 2014
    Location
    East Tennessee
    My Bikes
    Giant Defy Advanced 1, Trek Madone 5.0, Trek 5400
    Posts
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    There seems to be some debate concerning chain ring replacement. Can anyone post a photograph of what they consider replacement worthy wear or damage? I'm considering replacing my outer ring on my Madone 5.0 commuter (and backup). Having some difficulty finding a replacement. It is a triple crank, 52 tooth. Can it safely be replaced with a 53 tooth ring?

  22. #22
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    25,938
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by ZanesGrandad View Post
    There seems to be some debate concerning chain ring replacement. Can anyone post a photograph of what they consider replacement worthy wear or damage? I'm considering replacing my outer ring on my Madone 5.0 commuter (and backup). Having some difficulty finding a replacement. It is a triple crank, 52 tooth. Can it safely be replaced with a 53 tooth ring?
    A truly worn chainring will have sharply pointed teeth like a crosscut saw and/or heavily shark-fin shaped teeth. The real test is does the chain skip on the chainring under load.

    Crank makers typically design their chainrings in pairs so the shifting enhancements (ramps, pins, shaped teeth) line up for best results. Changing to a chainring from a different set will compromise shifting somewhat. So, using a 53T chainring intended for a 39T small ring will not shift as well as the matched 52T that is provided on a triple crank.

  23. #23
    Senior Member
    Join Date
    Apr 2009
    Location
    New Rochelle, NY
    My Bikes
    too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
    Posts
    22,009
    Mentioned
    60 Post(s)
    Tagged
    1 Thread(s)
    like tires, brake shoes and cables, there's no scheduled replacement involved. Replace as needed. Meaning when the chain slips and won't transmit power, or when teeth break or bend. On a road bike, this may happen at 40-50,000 miles or so. On a mtn bike the granny or middle ring can wear out in less than a year of hard riding.
    FB
    Chain-L site

    An ounce of diagnosis is worth a pound of cure.

    “Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

    “One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN

    WARNING, I'm from New York. Thin skinned people should maintain safe distance.

  24. #24
    Senior Member
    Join Date
    Dec 2010
    Location
    Above ground, Walnut Creek, Ca
    My Bikes
    7 single speed road
    Posts
    4,103
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    wait for it....

  25. #25
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    2,392
    Mentioned
    41 Post(s)
    Tagged
    0 Thread(s)
    Steel and 7075t6 aluminum is pretty long wearing .

Page 1 of 2 12 LastLast

Posting Permissions

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