Advertise on Bikeforums.net



User Tag List

Results 1 to 11 of 11
  1. #1
    Senior Member jpbrew814's Avatar
    Join Date
    Aug 2007
    Location
    Delaware Water Gap, PA
    My Bikes
    litespeed classic/cannondale caad3
    Posts
    172
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Junior gearing for 8 speed campagnolo

    How can I make this work? The only cassettes I've been able to find online are either 12-23 or 13-26, the latter is currently on my bike. I would try to block out gears, but that would require two gears to go unused in addition to the screw on the derailer being too short to do so.

  2. #2
    Senior Member grolby's Avatar
    Join Date
    Jan 2005
    Location
    BOSTON BABY
    Posts
    7,116
    Mentioned
    8 Post(s)
    Tagged
    0 Thread(s)
    Blocking out gears is your only option here, short of some kind of miracle. If you can't do it with the limit screws on the derailer (which seems hard to believe, but okay), then you'll just have to adjust your indexing so that your shifter is set to the highest gear with the chain on the 2nd highest cog.

  3. #3
    aka mattio queerpunk's Avatar
    Join Date
    May 2005
    Posts
    5,496
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Just put a 48t chainring on your crank.

    "48/13 for an expected rollout of 25'7"," according to this: http://www.usacycling.org/forms/rule...DJUSTMENTS.pdf
    the hipster myth.

    i practice vagabondery.

  4. #4
    Senior Member jpbrew814's Avatar
    Join Date
    Aug 2007
    Location
    Delaware Water Gap, PA
    My Bikes
    litespeed classic/cannondale caad3
    Posts
    172
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    where can I buy one?
    Last edited by jpbrew814; 04-12-09 at 09:52 PM. Reason: wrong

  5. #5
    aka mattio queerpunk's Avatar
    Join Date
    May 2005
    Posts
    5,496
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    What kind of crank do you have? Different cranks have different "bolt circle diameters," also known as BCD - if you draw a circle around all of the chainring bolts (that attack the chainring to the crank), the diameter of that circle. Campag cranks use 135 bcd, most other road cranks use 130 bcd, old road cranks and current track cranks use 144, compact cranks use 110. Anyway, your local bike shop can get you a chainring, or any one of numerous on line retailers.
    the hipster myth.

    i practice vagabondery.

  6. #6
    Senior Member jpbrew814's Avatar
    Join Date
    Aug 2007
    Location
    Delaware Water Gap, PA
    My Bikes
    litespeed classic/cannondale caad3
    Posts
    172
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It's a Campagnolo Athena 53/39 crankset

  7. #7
    Mitcholo CrimsonKarter21's Avatar
    Join Date
    Aug 2006
    Location
    Oost Vlaanderen in mind, Cleveland in body
    My Bikes
    2010 Mitcholo w/ Sram Force/Red
    Posts
    8,851
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Miche might make one. Check on them.

  8. #8
    starting pistol means war YMCA's Avatar
    Join Date
    Aug 2005
    Location
    east coast
    My Bikes
    Cervelo R3
    Posts
    3,094
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    45x12
    Lots of juniors have used that setup.
    That way you can use many peoples wheels.

  9. #9
    ..... Jynx's Avatar
    Join Date
    Aug 2006
    Location
    Long Island
    My Bikes
    2006 Cannondale CAAD8
    Posts
    4,823
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I have heard of juniors grinding down the teeth on the 2 smallest cogs so they would be unusable. Not sure if it is a good idea or legal as I am not too familiar with junior rules.

  10. #10
    Mitcholo CrimsonKarter21's Avatar
    Join Date
    Aug 2006
    Location
    Oost Vlaanderen in mind, Cleveland in body
    My Bikes
    2010 Mitcholo w/ Sram Force/Red
    Posts
    8,851
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Jynx View Post
    I have heard of juniors grinding down the teeth on the 2 smallest cogs so they would be unusable. Not sure if it is a good idea or legal as I am not too familiar with junior rules.
    That's a BAAAAAAD idea. For regular competition blocked out gearing is alright, but in national and state competition it's explicitly banned.

  11. #11
    shut up and ride
    Join Date
    Nov 2005
    Location
    noho
    My Bikes
    supersix hi-mod,burley duet tandem,woodrup track,cannondale cross,specialized road
    Posts
    1,942
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    grinding off the teeth would be legal, as that is not a blocked gear. a blocked gear is when you use the derailleur limit screws to block access to gears. they don't want people screwing in their limit screws at the end of a race so that the gears are blocked for the rollout after a race

Posting Permissions

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