Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Senior Member slim_77's Avatar
    Join Date
    Jul 2006
    Location
    chicago,Il
    My Bikes
    yes please
    Posts
    2,401
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    DA chainring & Rival crank compatability

    I'm installing a DA chain ring on a Rival crank and the chainring overhangs the arms of the spider by about 2mm on either end. Is this a potential problem?

    (someone will ask what the F I am doing putting a DA chainring on a Rival crank. Last Sept, at mile 87 on a century, a guy on a Rivendell caused me to hit the tarmac. I was fine but my chainring was bent enough to end my ride. This guy was nice enough to say "hey, I have a DA chainring (130bcd, 53t) if you give me your address I'll send it to you." The guy did. end of story.)
    Attached Images Attached Images
    Last edited by slim_77; 02-12-08 at 06:14 PM.
    gravity: it's not just a good idea, it's the law.

  2. #2
    Senior Member slim_77's Avatar
    Join Date
    Jul 2006
    Location
    chicago,Il
    My Bikes
    yes please
    Posts
    2,401
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    ...anybody?
    gravity: it's not just a good idea, it's the law.

  3. #3
    drink slinger
    Join Date
    Feb 2005
    Posts
    454
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by slim_77 View Post
    I'm installing a DA chain ring on a Rival crank and the chainring overhangs the arms of the spider by about 2mm on either end. Is this a potential problem?

    (someone will ask what the F I am doing putting a DA chainring on a Rival crank. Last Sept, at mile 87 on a century, a guy on a Rivendell caused me to hit the tarmac. I was fine but my chainring was bent enough to end my ride. This guy was nice enough to say "hey, I have a DA chainring (130bcd, 53t) if you give me your address I'll send it to you." The guy did. end of story.)
    Should be just fine. You might file down the points to prevent anything snagging. But as long as it fits flat and firmly into the slot, I see no problem at all. I would ride it.
    Five is right out!

    My build a precision truing stand on the cheap instructable

  4. #4
    Senior Member slim_77's Avatar
    Join Date
    Jul 2006
    Location
    chicago,Il
    My Bikes
    yes please
    Posts
    2,401
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    if thepowers says so, it must be alright with me. Thanks!

    ^^I agree. I initially thought this would be a problem as force would not be distributed throughout the chainring and thus cause some kind of damage and possible failure (think a 10s chainring on a FG). But I later realized (in the shower) that the force is transfered at the stackbolts and not where the chainring sits "on" the lip of the spider (as pictured above). So, other than looking kind of funny, it is not a problem.
    gravity: it's not just a good idea, it's the law.

  5. #5
    slow as I ever was Ex Pres's Avatar
    Join Date
    Dec 2007
    Location
    an imposter living in the 35223
    Posts
    5,626
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    The OCP police might get you, but otherwise you're fine
    72 special CNC ___________ 72 Frejus (ala Legnano) __73 Holdsworth Record
    78 Raleigh Professional_____ 80 Ranson_____________ 80 unknown French (SS)
    82 Peugeot PXN10_________83 Trek 620 (nee 600)____ 85 Gianni Motta
    85 Trek 560______________88 Guerciotti GLX
    90 Miele Gara_____________02 Casati Dardo (g/blue)__02 Casati Dardo (y/blk)
    03 Casati Dardo___________08 BF IRO (fixed)________10 Vassago Fisticuff (IGH)

Posting Permissions

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