New build snags

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  • New build snags
  • fasthaggis
    Member

    Is the chain the only new part on the running gear ?
    if so ,it’s going to be chainrings,cassette or both.

    Premier Icon tuskaloosa
    Subscriber

    chain correct length?

    m6dwn
    Member

    Big ring issue sounds like worn teeth, and maybe stiff chain links for the other?

    Premier Icon offthebrakes
    Subscriber

    Stiff chain links often become obvious in the workstand when you turn the pedals backwards, so worth a try to see if it is that.

    Premier Icon scaredypants
    Subscriber

    new chain on worn chainring is a recipe for chainsuck. Not quite sure what you’re describing but that’s my bet

    cynic-al
    Member

    1. Check chainline also.

    2. Tough to say

    markshires
    Member

    I had what sounds like a similar problem, when I built my bike from old bits and put a new chain on.

    I found one problem that was my rear QR Skewer wasn’t gripping the frame enough, it kept sliding out, only slightly! When I looked the teeth on it had worn, a new skewer fixed it for me.

    I still had a bit of skipping about though, but after about 50 miles or so of riding it seemed to sort its self out, I guess the chain or cassette wore into each other.

    House
    Member

    Just completed a new build – full suss – mix of new components and old. All seems to work really well in the bike stand, but two annoying issues on first test ride. Any thoughts welcome!

    Btw… Cranks old, chain new, rear derailleur almost new. 2×10

    1/ when in big ring, the minute I try to put serious power down the chain skips – appears to try to dive into smaller ring
    2/ when in small ring, regular chain skipping from jockey wheels – it runs ok but is quite annoying

    Can not recreate either problem in the bike stand.

    Thoughts? Thank you!

    House
    Member

    Thanks guys

    Suspect worn chain rings for first – can’t work out why I can’t replicate jockey wheel on stand – could it be a different chain length when the rear suspension is active?

    keithyr
    Member

    i had a similar problem, 2×10 set up and always seemed to skip on higher gears in the cassette when under load…..swapped new cassette and solved it.

    Depending on the frame, the chain length will grow as the rear suspension compresses. I unbolt one end of the shock and pull the rear wheel up to find the longest chain point on my bike.

    mattrgee
    Member

    Movement in the bottom bracket under load which would then screw the chain line?

    House
    Member

    New press fit bb – how do I prevent chain line moving under load?

Viewing 13 posts - 1 through 13 (of 13 total)

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