Chain Line and Chain Slip?

The Northern Monkey
The Northern Monkey Posts: 19,136
edited April 2009 in MTB workshop & tech
When putting pressure on pedals I get a "crack" and the cain slips :(

(I have just changed a link in the chain so it could be that, just want to cancel out that it could be the chain line.)

pics of chainline (still running SS btw, just wanted to go for a blast :()
DSC02866.jpg

DSC02864.jpg

DSC02862.jpg

DSC02860.jpg

B

Comments

  • nicklouse
    nicklouse Posts: 50,673
    well that rear cog looks a mile out.

    when you spin the cranks what noises are there.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • nothing really... nothing seems to be rubbing :?
  • should tha rear cog be moved more towards the hub?
  • nicklouse
    nicklouse Posts: 50,673
    In my eyes yes.
    it wants to be where the 5th cog is. (1 being the biggest and 9 the smallest).
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • hmm. doesn't really explain the slipping though. haven't moved it since I had my saint bash on... and then nothing has changed anyways.

    I'll have a fiddle tomorrow, see if I can move it back a bit... i think the reason I put it there was because the DMR tension seeker would have been well out of line otherwise :(
  • supersonic
    supersonic Posts: 82,708
    I agree, looks quite a bit off that!
  • poop :(

    How am I looking for the E13 fitment? Hoping I won't have to change much when I get gears (hopefully next week, yaaay).
  • Ok, so i've moved the cog more towards the hub, the chainline up top looks 10X better.

    However, the arm on the Tension Seeker isn't long enough, so its just puling the chain off.

    Bah, so much for having a blast... think i'll give up and wait for my gears to arrive :(
  • Andy B
    Andy B Posts: 8,115
    Have you got the Tension Seeker pushing the chain down, or up?

    IIRC they're designed to push the chain upwards
    2385861000_d125abe796_m.jpg
  • Down... the instructions say you can use it either way... I tried it up, but because of the thread on the nut tensioning upwards seems to make the nut undo itself.

    I don't think that'd make much difference though... the cog on the tension seeker is nowhere near the chain line, so it forms a sort of dogleg.

    Thats the reason why the chainline was off in the 1st place, the tension seeker arm wasn't long enough :(