Advertise on Bikeforums.net



User Tag List

Results 1 to 3 of 3
  1. #1
    Senior Member
    Join Date
    May 2008
    Location
    Toronto, Canada
    My Bikes
    Merckx titanium with Chorus, Columbus Cyclops Campy Victory, 531 Harry Quinn 1st gen DA, SLX Fuso 8-spd DA, Airfriday. Colnago Gilco with Campy mix, Claude Pottie 753 w. 8S Record, Claude Pottie Columbus with 105, Basso with DA 7402, Masi Team 3v wit
    Posts
    560
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    chorus crank dust cap removal (Dust cap)

    I am trying to strip a bike with Campagnolo Chorus 8-speed. (late 90s?) without the benefit of another of these DARN proprietary tools.
    I am stymied by the dust ring or cap. on on side I managed to unscrew it's reverse thread. but only a bit. for the next 30 minutes I went through a stupid dance of a little bit of dust ring CW, a little bit of center bolt CCW, a little bit of dust ring CW, a little bit of bolt CCW.... until eventually every came loose and I was able to extract the crank.

    the other side dust ring is more obstinate. I can't loosen it to start this CW CCW CW CCW dance.

    am I missing something? is this easier than it seems? I've read something about some Campy "Self Extracting Crank" system.

    should I just be leaning on the 7mm allen key and somehow the stupid dust ring will come out? I can only imagine stripping the darn thing.

  2. #2
    Senior Member
    Join Date
    May 2004
    Location
    Wilmington, DE
    My Bikes
    2003 Specialized Hardrock, 2004 LOOK KG386i, 2005 Iron Horse Warrior Expert, 2009 Pedal Force CX1
    Posts
    8,849
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    It sounds like the "dust caps" are really self extracting caps that are secured to the crank bolts somehow. Backing out the crank bolt should pull the arm off the bottom bracket without any need to touch the dust cap, at least that's how at the self extracting crank bolts I've ever used have worked.

  3. #3
    Senior Member
    Join Date
    May 2008
    Location
    Toronto, Canada
    My Bikes
    Merckx titanium with Chorus, Columbus Cyclops Campy Victory, 531 Harry Quinn 1st gen DA, SLX Fuso 8-spd DA, Airfriday. Colnago Gilco with Campy mix, Claude Pottie 753 w. 8S Record, Claude Pottie Columbus with 105, Basso with DA 7402, Masi Team 3v wit
    Posts
    560
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    ahhah
    many thanks. I'd not used the SE system before. (whenever I have forced something, I've usually broken it so I assumed that when it got tight, I'd bust something.)

    so, chain rings side is now off.
    But I have managed to somehow remove and seperate the dust ring and the bolt. and I know see that I have to get them back together.

    any tips on how I get the bolt back into the dust ring?
    Attached Images Attached Images

Posting Permissions

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