Advertise on Bikeforums.net



User Tag List

Results 1 to 15 of 15
  1. #1
    Senior Member
    Join Date
    Dec 2008
    Posts
    709
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Hairline cracks in cranks

    So I picked up this Bianchi Trofeo for cheap to clean up and flip, and in the disassembly/clean/reassembly I noticed 2 hairline cracks coming out from opposite corners of the square hole on in-facing side of the crank spider. These are Campagnolo Stratos cranks and I don't want to have to hunt down a new set for a flipper and don't have a decent back-up. They seem fine when they go back on and I've ridden on them without noticing any problems.

    Should I worry about this or just warn the next owner and knock the asking price down a bit?

  2. #2
    Paste Taster Retem's Avatar
    Join Date
    May 2006
    Location
    Denver, Co
    My Bikes
    1970's kobe, Jury Bike, Dahon Boardwalk S1, Moto Outcast 29, Scrambler v3
    Posts
    4,390
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I would knock it down a some and warn the next owner it is slightly dangerous but not catastrophic if they fail
    I am dyslexic so bear with my posts.... [SIGPIC][/SIGPIC]

  3. #3
    Senior Member Chombi's Avatar
    Join Date
    Jul 2009
    Posts
    9,353
    Mentioned
    12 Post(s)
    Tagged
    0 Thread(s)
    Sounds like the PO really overtightened those crank arms on the BB axle tapers to cause those corner cracks. Those cranks can suddenly crack through at the worst time. I'd trash them if there are definitely cracks on them, unless the buyer would sign a waver (can be done on the back of a receipt) to accept the bike "As-Is" with a description of the existing damage on the crank to be used at the owner's risk.
    JMOs

    Chombi
    84 Peugeot PSV

  4. #4
    Senior Member Grand Bois's Avatar
    Join Date
    Mar 2005
    Location
    Pinole, CA, USA
    Posts
    15,277
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    He would have to have proof that you were aware of the problem. You just gave him that.

  5. #5
    Senior Member
    Join Date
    Dec 2008
    Posts
    709
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Dirtdrop View Post
    He would have to have proof that you were aware of the problem. You just gave him that.
    I apologize for my not understanding, but could you elaborate or rephrase this with fewer pronouns?

  6. #6
    Senior Member Chombi's Avatar
    Join Date
    Jul 2009
    Posts
    9,353
    Mentioned
    12 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by stausty View Post
    I apologize for my not understanding, but could you elaborate or rephrase this with fewer pronouns?
    +1

    Chombi
    84 Peugeot PSV

  7. #7
    Bianchi Goddess Bianchigirll's Avatar
    Join Date
    Apr 2009
    Location
    Camp Hill, PA
    My Bikes
    Too many to list here check my signature.
    Posts
    20,174
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)
    What year a size is this Trofeo and where are you flipping it? I sort of remember an issue with a crank from back in the early '80s late '70s si the bike that old?
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo, '86 Volpe, '89 Axis, '79 Mixte SOLD, '99 Mega Pro XL Ti, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

  8. #8
    Senior Member
    Join Date
    Dec 2008
    Posts
    709
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It's a '96(+-1) and I'm in Atlanta. Even with the bad crank it's a great bike, but getting a new arm or crankset will slow me down in getting it back out the door.

  9. #9
    rhm
    rhm is offline
    multimodal commuter rhm's Avatar
    Join Date
    Nov 2006
    Location
    NJ, NYC, LI
    My Bikes
    1945? Fothergill, 1948 Raleigh Record Ace, 1954 Drysdale, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1972 Fuji Finest, 1983 Trek 720, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
    Posts
    12,369
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)
    Quote Originally Posted by stausty View Post
    I apologize for my not understanding, but could you elaborate or rephrase this with fewer pronouns?
    I'll take a stab at it!

    For Buyer to have a legal case against Seller, in the event that the crank failed and Buyer or his kin was injured, Buyer would need proof that Seller knowingly sold a bicycle in damaged, not fit to be ridden, condition. This thread proves that Seller knows about the damage and should be aware that it is potentially dangerous. The question would be, whether Buyer knows about it.

  10. #10
    Senior Member Grand Bois's Avatar
    Join Date
    Mar 2005
    Location
    Pinole, CA, USA
    Posts
    15,277
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by rhm View Post
    I'll take a stab at it!

    For Buyer to have a legal case against Seller, in the event that the crank failed and Buyer or his kin was injured, Buyer would need proof that Seller knowingly sold a bicycle in damaged, not fit to be ridden, condition. This thread proves that Seller knows about the damage and should be aware that it is potentially dangerous. The question would be, whether Buyer knows about it.
    Thank you!

  11. #11
    Senior Member love2pedal.com's Avatar
    Join Date
    Jan 2009
    Location
    Kansas City, MO
    My Bikes
    Look 586, Condor Baracchi, Litespeed
    Posts
    731
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If it were me, and I saw the cracked crankarm on a bike I was selling, I would nip the problem in the bud and pull the crankarm off and not include it in the sale.

    Even if you have a buyer sign something acknowledging they are aware of the crack in the crankarm, that doesn't mean you won't have a lawsuit or other headaches if the crankarm contributes to an accident. You might win the lawsuit (I have no idea, I am not a lawyer), but is it worth the risk exposure and possible expense in defending a lawsuit?

    Dan

  12. #12
    Randomhead
    Join Date
    Aug 2008
    Location
    Happy Valley, Pennsylvania
    Posts
    12,547
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    who knows what crack length will lead to rupture of those cracks. Not worth it.

  13. #13
    Senior Member
    Join Date
    Dec 2008
    Posts
    709
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for the advice. Good thing someone just put a perfect replacement crankset on eBay....unless someone else out there has an 8-speed Campy crankset they want to trade for *hint hint*.

  14. #14
    Senior Member cyclotoine's Avatar
    Join Date
    Jul 2004
    Location
    YT
    Posts
    7,602
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    I've got a first gen. chorus crankset... PM me if ebay thing falls through.
    1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear

  15. #15
    Bianchi Goddess Bianchigirll's Avatar
    Join Date
    Apr 2009
    Location
    Camp Hill, PA
    My Bikes
    Too many to list here check my signature.
    Posts
    20,174
    Mentioned
    31 Post(s)
    Tagged
    1 Thread(s)
    how long are the Chorus cranks?
    Bianchis '87 Sport SX, '90 Proto (2), '91 Boarala 'cross, '93 Project 3, '88 Trofeo, '86 Volpe, '89 Axis, '79 Mixte SOLD, '99 Mega Pro XL Ti, '97 Ti Megatube, , '90 something Vento 603,

    Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '86 Bertoni (sold), '09 Motobecane SS, '98 Hetchins M.O., '09 K2 Mainframe, '89 Trek 2000, '?? Jane Doe (still on the drawing board), '90ish Haro Escape

Posting Permissions

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