Advertise on Bikeforums.net



User Tag List

Results 1 to 8 of 8
  1. #1
    Senior Member Radix's Avatar
    Join Date
    Jun 2009
    Location
    Maine
    Posts
    114
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    105 vs ultegra chainring

    Anyone know the difference between a 105 & an ultegra 42 tooth middle chain ring? I'm mostly curious about performance, but also the weight difference. I checked a few sites and couldn't find the respective weights.

    Thanks for any info you may offer.

  2. #2
    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
    25,410
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    They are for all practical purposes identical. The Ultegra will have a prettier finish but that's about it. Weight difference, if any, will be infinitesimal.

  3. #3
    Senior Member Radix's Avatar
    Join Date
    Jun 2009
    Location
    Maine
    Posts
    114
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    cool! Thanks for the info!

  4. #4
    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)
    I recall hearing that the Ultegra rings are machined versus the stamped 105 rings (I am certain of the latter). Doesn't necessarily make them better but as HR suggests, they are probably prettier.

  5. #5
    Senior Member Radix's Avatar
    Join Date
    Jun 2009
    Location
    Maine
    Posts
    114
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Equally interesting. Thanks!

  6. #6
    Gear Combo Guru Chris_W's Avatar
    Join Date
    May 2007
    Location
    Switzerland
    My Bikes
    Spec' Tarmac (road), Spec' Secteur Disc (commuter & tourer), Salsa Mamasita (MTB), CoMo Speedster (tandem), Surly Big Dummy (cargo), Airnimal (folder), a train pass, and NO car :)
    Posts
    2,046
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Definitely some 105 rings are stamped and some Ultegra rings are machined. Machined rings cost more to manufacture and last longer. It's hard to know whether this applies to the two rings that you are considering.

  7. #7
    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
    25,410
    Mentioned
    5 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Chris_W View Post
    Machined rings cost more to manufacture...
    True
    Quote Originally Posted by Chris_W View Post
    .....and last longer......
    I don't know about this. I've had 105 chainrings last over 30,000 miles. What more should I expect?

  8. #8
    Senior Member
    Join Date
    Mar 2010
    Posts
    919
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hardness affects durability. Machining does not significantly alter the hardness of Al, therefore durability should not increase. Machining can yield much tigher tolerances. However, the steel chain will quickly wear away any minor burrs during stamping.

    High-end components rarely improve the joy of cycling. There will be negligible speed improvement for 99.99% of the cyclists. It's all about the MOTOR.

Posting Permissions

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