Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Goon
    Join Date
    Jul 2008
    Location
    Ypsilanti, MI
    My Bikes
    Rocky Mountain RC30, Soma Sport Fixed
    Posts
    864
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Blarg! Chainline opinion!

    So, I apparently the guy who gave me my 15t rear cog bench ground off some rust to make it look shiny, well as a result he bench ground a little bit of the little gap filler on the side of the cog so it doesn't sit flush with the lock ring anymore.

    SO! I bought a new cog. Problem is the bike store only had 16t or higher, well my chainring was 42, and 42 16 is a little bit too easy SO, I thought, "hey I have a 52 cog at home!" so I asked him for an 18t cog.

    I get home and I put the Chain ring on and find that if I put it on the inside of the chain ring holder thingy, the gear is too big and the chain rubs against the frame.

    I put it to the outside and It looks like the chain line isn't perfect anymore.

    My question is, how much angle is too much for a fixed? here is a picture of my two cogs:



    Now, the picture isn't perfect, and it isn't quite edge on with the read cog, but it's pretty close, thankfully, it's not edge on slightly favors the chainline, but anyway, I added green lines to show where the two cogs are.

    Is this too far?

    What options do I have?

    EDIT: Additionally, I have some other pictures with a chain laying over the cogs, and a second shot like this.
    Last edited by cg1985; 05-12-10 at 05:13 PM. Reason: additional info
    No matter how bad things get, they can't get any better, and they can't get any worse, things are what they are, so you better get used to it Nancy, quit your B*tchin'

    -Church

  2. #2
    Goon
    Join Date
    Jul 2008
    Location
    Ypsilanti, MI
    My Bikes
    Rocky Mountain RC30, Soma Sport Fixed
    Posts
    864
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)


    Here is another image with a chain on it. just draped over the cogs to see how it looks
    No matter how bad things get, they can't get any better, and they can't get any worse, things are what they are, so you better get used to it Nancy, quit your B*tchin'

    -Church

  3. #3
    AEO
    AEO is offline
    Senior Member AEO's Avatar
    Join Date
    Jun 2007
    Location
    A Coffin Called Earth. or Toronto, ON
    My Bikes
    Bianchi, Miyata, Dahon, Rossin
    Posts
    12,245
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    you'll know it's too much when there's excessive noise or your chain falls off.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  4. #4
    Goon
    Join Date
    Jul 2008
    Location
    Ypsilanti, MI
    My Bikes
    Rocky Mountain RC30, Soma Sport Fixed
    Posts
    864
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by AEO View Post
    you'll know it's too much when there's excessive noise or your chain falls off.
    Heh, I suppose that is true, I also read on Sheldon Brown's site that there are spacing washers you can get for your sprocket, if I get a lot of noise, Maybe I'll pick some up from the LSB.
    No matter how bad things get, they can't get any better, and they can't get any worse, things are what they are, so you better get used to it Nancy, quit your B*tchin'

    -Church

  5. #5
    AEO
    AEO is offline
    Senior Member AEO's Avatar
    Join Date
    Jun 2007
    Location
    A Coffin Called Earth. or Toronto, ON
    My Bikes
    Bianchi, Miyata, Dahon, Rossin
    Posts
    12,245
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    yeah, you can also do the spacer method.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

Posting Permissions

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