Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Senior Member G. Ike's Avatar
    Join Date
    Aug 2007
    Location
    Mount Bethel, Pennsylvania
    My Bikes
    Trek 1000SL, Lotus Unique, Panasonic ???
    Posts
    261
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Converting 6 speed to 8 speed?

    A friend of mine has an 8 speed Campagnolo Athena groupset that he wants to give me. My bikes is a 6 speed equipped with Shimano 600 and 27 inch wheels. I want to make this conversion as cheaply as possible. A new wheel set and long reach brakes should do, right? And do I need some kind of kit to convert the bike from downtube shifting to Ergopower? Also, the frame is a mid 80's Lotus Unique. I think I may have to have the dropouts "stretched" for lack of a better word to accommodate the new cassette. If I'm missing anything, please let me know. Thanks in advance

  2. #2
    Senior Member
    Join Date
    Jan 2006
    Location
    Tucson, AZ
    Posts
    754
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It might be easier to just get another frame that fits you and accepts the gruppo. Unless you just don't want to part with your frame (excellent fit, sentimental value, etc.) With such a nice parts set, you're not doing yourself any favors by retrofitting backwards. Sorta like butchering a Volkswagon to get a V-8 to fit. It might be possible, but is it worth it? And the notion of "spreading" (the rear triangle?) to get the wider hubset to fit doesn't inspire my confidence. Just my humble opinion.

  3. #3
    Senior Member
    Join Date
    Nov 2006
    Posts
    449
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    1. You need a rear Campagnolo hub that is compatible with Athena to rebuild the wheel. You can reuse the existing rim, but need new spokes.
    2. The front wheel needs no change.
    3. You can use old brakes if you stay with 27" wheels.
    4. In order to convert to Ergopower, you need Ergopowers and downtube cable stops: http://www.biketoolsetc.com/index.cg..._id=SH-67B9100

    5. Dropouts can be stretched from 126mm to 130mm using a wooden board http://www.sheldonbrown.com/frame-spacing.html
    Last edited by Barabaika; 05-16-08 at 12:16 AM.

  4. #4
    Senior Member 04jtb's Avatar
    Join Date
    Mar 2007
    Location
    West Dorset, UK
    My Bikes
    1983 Dawes Galaxy, 2006 Raleigh Airlite, 1982 Sun Solo (fixed)
    Posts
    908
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bikemeister View Post
    And the notion of "spreading" (the rear triangle?) to get the wider hubset to fit doesn't inspire my confidence.
    People do this all the time

    A link how to do it is number 5. in the above post
    Quote Originally Posted by cc700 View Post
    i jam my thumbs up and back into the tubes. this way i can point my fingers straight out in front to split the wind and attain an even more aero profile, and the usual fixed gear - zen - connectedness feeling through the drivetrain is multiplied ten fold because my thumbs become one with the tubing.
    A group for all Dawes Galaxy owners to give and recieve information about them
    http://flickr.com/groups/dawes_galaxy/

  5. #5
    Senior Member due ruote's Avatar
    Join Date
    Dec 2006
    Posts
    4,016
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by 04jtb View Post
    People do this all the time

    A link how to do it is number 5. in the above post
    +1 Coldsetting the frame is no big deal. Just be gentle; you can generate a lot of leverage and you don't want to overdo it. You're only talking about 2mm on each side, which ain't much. More conservatively, you can probably spread the dropouts enough to put the new wheel in without coldsetting, unless you're concerned about quick wheel changes in a race or something.

Posting Permissions

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