Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Member
    Join Date
    Aug 2005
    Posts
    38
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Chainring Problem

    I am trying to change the first chainring on my road bike, but I can't seem to find the right allen key to remove the chainring bolts. I tried standard and metric but it is "in between" the sizes, I mean what the hell?!? I have a shimano fc-a050 crankset.

  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
    24,813
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    The right hex key for most chainring bolts is 5 mm. Some brands now use Torx screws but I don't think Shimano does.

    BTW, I looked up your crank on Shimano's web site and I think it's one of their low-line models. It's possible that the chainrings are not replacable which is why the bolts won't come off. Some of Shimano's low line MTB cranks have non-replacable chainrings so your road crank may have the same "feature".

  3. #3
    Member
    Join Date
    Aug 2005
    Posts
    38
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Man, that is so gay. Maybe I can dremel a slit and use a screwdriveer to force them out. I refuse to give into shimano's communist policy!!!

  4. #4
    Member
    Join Date
    Aug 2005
    Posts
    38
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    But it just looks like I will need to replace the "fake" chainring bolts with new "real" ones. I'll take a pic and post it later. Unless you are trying to say they are welded, then its a different story altogether. But since the chainrings are available in different sizes, I don't think that's the case. I really think they put "fake" chainring bolts so that you'd have to upgrade your crankset in order to swap out different size chainrings. Little do they know we have people like me who WILL beat the system!!!

  5. #5
    JRA...
    Join Date
    Oct 2003
    Location
    philly
    My Bikes
    trek 520 & 736, DeRosa Professional, Fuji Professional, Raleigh International 3-speed, Saronni (any info people?), Humber 3-speed, Raleigh Sports, Carlton Grand Prix coming soon!
    Posts
    839
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    eh, what is it you're trying to accomplish? i hope you have a free chainring already that works, because replacement might cost better'n half of what a basic replacement crank may cost.

Posting Permissions

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