Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Junior Member
    Join Date
    Sep 2010
    Location
    Denver, CO, USA
    My Bikes
    Masi Gran Criterium, Colnago Super, Milani Replica.
    Posts
    17
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Old Colnago has cracked dropout. Can it be repaired? (picture)

    On the right rear dropout, just aft of the chainstay joint, my old Colnago Super has developed a crack. Looking closely, under a respray job, I think there was a previous repair. The crack is on one side only, outer side, does not go through, and does not move or flex. I can ride the bike, but obviously can't live with this.
    Can this be mig welded or does one have to rebraze?

    Thanks for any advice. Many have dealt with this type of question before on this forum, I'm sure.

    Pete


  2. #2
    a bored kid hpmcardle's Avatar
    Join Date
    Jul 2010
    Location
    East Lansing, MI
    My Bikes
    Year unknown CCM Targa conversion
    Posts
    177
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I don't know anything about framebuilding, but those are some pretty dropouts.
    Quote Originally Posted by cc700 View Post
    i'm so icy hot i need to put bleach on my skids to keep my underwear as fresh as my street cred.

  3. #3
    Decrepit Member Scooper's Avatar
    Join Date
    Aug 2005
    Location
    San Francisco California
    My Bikes
    Waterford 953 RS-22
    Posts
    8,776
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I had a similar failure on the driveside dropout of my '87 Paramount. It was repaired by Paul Sadoff (Rock Lobster Custom Cycles). Paul cut a "V" groove where the crack was and TIG welded the V groove. He then ground the weld beads flush with surface of the dropout.

    The repair has held up well.

    Before:



    After (I also had the frame repainted):

    - Stan

  4. #4
    Junior Member
    Join Date
    Sep 2010
    Location
    Denver, CO, USA
    My Bikes
    Masi Gran Criterium, Colnago Super, Milani Replica.
    Posts
    17
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks Stan, for info and helpful pics. I was referred over here from Mechanics forum, where TIG welding was suggested.

    Pete

  5. #5
    Senior Member ftwelder's Avatar
    Join Date
    Apr 2010
    Location
    vermont
    My Bikes
    Many
    Posts
    3,093
    Mentioned
    7 Post(s)
    Tagged
    1 Thread(s)
    TIG repair would be proper and easy.

Posting Permissions

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