Forum home Mountain biking forum MTB beginners

Problem gear shifting

MikeCherylMikeCheryl Posts: 59
edited June 2013 in MTB beginners
Hi

Really new to all this so please be kind :wink:

Got a Rockrider 5.2 after reading advice here.

It has gear shifts left 1 - 3 and right 1 - 8.

The 1 - 8 works fine.

The 1 -3 I am having trouble with.

I phoned Decathlon today and they said it was the two small screws that needed adjustment.
Shown here:

P1040822_zps4281f87a.jpg[/URL]

I was told to tighten them both by maybe three turns, I did this and it made the problem worse.
The issue I was having was that when going from 2 to 1 the chain was going past the smallest cog and ending up on the pedal axle.
P1040820_zpsed5d0904.jpg[/URL]
I did as directed but found it would not change down to 1 at all.
So I backed them off two turns, then one more so I should be back at the start.

Now I can change down to 1 without much issue, but changing up to 2 is a problem.
The chain never quite makes it unless I hold the change lever ober towards 3.

Tried to take some pics showing this:

P1040821_zpsf38c242f.jpg[/URL]

P1040819_zps9072cba6.jpg[/URL]

Given there are two screws I'd assume one was for up and the other down?

Really appreciate some help on how to get this sorted please?


Thanks

Mike

Posts

  • Chunkers1980Chunkers1980 Posts: 8,035
    Read Park Tool website and perhaps a few vids.

    From a quick read I think you need to screw in the inner stop so stop it over shifting, put some more tension in the cable through the barrel adjuster and make sure it can shift there by adjusting the outer limit screw,
  • MikeCherylMikeCheryl Posts: 59
    edited June 2013
    Thanks, yes I have come to understand what these two screws do now! a manual would have been great.
    Also found a cable adjuster on the back of the shift lever! so where I am now is, chain was shifting perfectly but dragging on the inside of the derailleur cage .
    Adjusted for that, and now it won't shift from small cog to big cog :( Grrrrr why can't I just buy something that works first time!!!
  • The RookieThe Rookie Posts: 27,756
    Chainring at the front (cassette at the rear).

    The front mech should never be able to touch a chainring.

    Or do you mean the chain was dragging on the mech cage?

    A front mech is a clunky old beast at best, but fine tuning (1/4 turn at a time) the front cable tension will sort it out.
  • MikeCherylMikeCheryl Posts: 59
    Chainring at the front (cassette at the rear).

    The front mech should never be able to touch a chainring.

    Or do you mean the chain was dragging on the mech cage?

    A front mech is a clunky old beast at best, but fine tuning (1/4 turn at a time) the front cable tension will sort it out.

    Hi, thanks, yes just saw its the 'cage' I am on about.
    Chain was dragging on the inside edge of the cage.
    From what I am reading it really is trial and error to get this right?
  • cooldadcooldad Posts: 32,599
    Not really, but once you've done it a few million times it's easy.
    Spend some time in Parktools - link below (or above I see) nice clear help on everything.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • MikeCherylMikeCheryl Posts: 59
Sign In or Register to comment.