Advertise on Bikeforums.net



User Tag List

Results 1 to 11 of 11
  1. #1
    Junior Member
    Join Date
    Jun 2008
    Posts
    21
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    bottom bracket replacment

    Hi,

    I have 105 octalink crank on my bike, the bottom bracket has gone, im going to buy a new groupset when I can afford it. In the mean time I just want to put a cheap shimano bottom bracket on, can I use any octalink or do I have to use a 105 botton bracket?

    Many thansk

  2. #2
    Senior Member
    Join Date
    Sep 2004
    Location
    boston, ma
    Posts
    2,840
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    match the spindle length and bb width/threading

  3. #3
    Junior Member
    Join Date
    Jun 2008
    Posts
    21
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hi apart from that any octalink will be fine then?

    How can I check spindle length with looking at the old spindle?

    Thanks

  4. #4
    Senior Member
    Join Date
    Oct 2007
    Location
    West Yorkshire, United Kingdom
    Posts
    3,610
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Shimano ES25 is just about the only option now, remove the old BB, it will have the length printed on a silver sitcker on the center, or you can measure it with the crank removed

  5. #5
    Junior Member
    Join Date
    Jun 2008
    Posts
    21
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Can i confirm that octalkink is the same as splined?

    Thanks for all your replies.

  6. #6
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    26,153
    Mentioned
    13 Post(s)
    Tagged
    0 Thread(s)
    There were two Octalink patterns, V1 which was used on most road cranks and V2 for most MTB cranks. Your 105 requies the V1 version.

    You could use any V1 model, 105, Ultegra or Dura Ace, but the 105 is the only one in current production. There are two lengths, 109.5 mm for double cranks and 118.5 mm for triples and Licktons in Chicago has both of them for about $50. Look here and scroll down to find the one you need: http://www.lickbike.com/searchsite.p...ottom+brackets

  7. #7
    Junior Member
    Join Date
    Jun 2008
    Posts
    21
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    HillRider can i not use the suggested Shimano ES25?

  8. #8
    Senior Member
    Join Date
    Oct 2007
    Location
    West Yorkshire, United Kingdom
    Posts
    3,610
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    As above with HillRider, fogot about the V1/V2 spec.

    Can you take your BB out? if so, it will have the exact spec you need printed on it, if your bike had a FULL 105 groupset, it would have had a 105 (5500) BB as seen here http://techdocs.shimano.com/media/te...9830612167.pdf pull yours, and replace with a matching BB.

    If you can't remove, take it to a bike shop, and get them to replace, they can worry about spec / sizing

  9. #9
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    26,153
    Mentioned
    13 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Gman3000 View Post
    HillRider can i not use the suggested Shimano ES25?
    Not with your 105 crank, the ES25 is a V2 style. As I mentioned above, road (V1) octalinks came in only two lengths, 109.5 mm for double cranks and 118.5 mm for triples. Get the one that matches your crank.

  10. #10
    Junior Member
    Join Date
    Jun 2008
    Posts
    21
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Many Thanks all

  11. #11
    Junior Member
    Join Date
    Jun 2008
    Posts
    21
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quick ? I maybe looking a t new crank, whats the difference between 9sp and 10sp in crank terms, im running 8 speed?

Posting Permissions

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