Advertise on Bikeforums.net



User Tag List

Results 1 to 2 of 2
  1. #1
    Senior Member
    Join Date
    Oct 2007
    Location
    st augustine fl
    My Bikes
    1983 Pinarello Treviso ,2008 Specialized Tarmac, 1984 Ciocc, De Rosa 1982, Fuji Absolute 2.0 touring bike
    Posts
    499
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Shimano Chainrings

    I have an older (95) Schwinn Paramount with a Shimano 105 group on it. I have been riding this for many, many miles and recently put on a new cassette and new chain and decided it would be a good idea to get new chainrings as well. I purchased a new set off e-bay that seem lighter and look quite a bit different from what came off. They are for a model FC-5502.

    They have some weird machining on them that looks like a wear pattern, some small rivet looking things that are placed around the ring. I don't know, I would hope Shimano has a method to it's madness. I put them on today and it shifts OK on the stand but required some adjustment. Does anyone know what the deal is with these rings??

    Yeah, yeah..I know I about the "Shiano" in the title..it's happy hour here!

    Mike
    Last edited by bykemike; 12-13-09 at 06:04 PM.
    "ready to navigate"

  2. #2
    Senior Member
    Join Date
    Feb 2005
    Location
    Oklahoma
    My Bikes
    Trek 5500, Colnago C-50
    Posts
    9,209
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    The rivet looking things are pick-up pins and help the chain shift up to a larger chainring, smoother and quicker. You may notice that some of the teeth have special shapes or ramps, also shifting aids.

    Al

Posting Permissions

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