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  • Slipping post solutions
  • spooky_b329
    Full Member

    I have a steel frame and have always had trouble with slipping posts.

    I’ve tried different posts and they all seem to be a good fit (don’t come out without a bit of effort)

    I’ve tried the original bolted clamp and a Hope QR (that is lubed and needs a lot of effort to close to have any chance of keeping the seat position)

    It’s a 27.2mm post in a 30.6 tube, no difference with the plastic shim or an ali cane creek, though I sized up to a 30.8 OD to get a snug fit.

    I’ve also tried two different carbon pastes (one specifically for gripping stuff).

    I know the Hope clamp hasn’t got the best rep so I don’t know whether to change that, or get a 30.6 post to remove the shim from the equation.

    Measuring the seat tube ID seems to be between 30.65 and 30.7mm.

    Seeking opinions before throwing more cash at it.  I don’t run a dropper on this bike so want to keep a QR collar on it.

    1
    whatyadoinsucka
    Free Member

    change the hope, my experience of slipping seatposts has always been due to hope,  clamps are terrible

    1
    suspendedanimation
    Full Member

    As above

    Get a salsa clamp

    1
    sandwicheater
    Full Member

    Get a salsa clamp

    This. Solved my issue (with a hope clamp).

    1
    nickc
    Full Member

    Get a proper sized post and a decent clamp.

    spooky_b329
    Full Member

    Thanks all. Just found an old litespeed bolted clamp and after sawing down a caliper bolt to fit it seems to be much more secure. Will give that a few rides and then go for a new QR. A carbon post has been on the cards for a while but so many £££!

    1
    montgomery
    Free Member

    Cider can shim has always worked for me.

    nickjb
    Free Member

    Just won a bet with myself. Torn between Hope seat clamp or Thompson seat post before opening the thread. Did guess the right winner.

    As above salsa seat clamps are the best although anything is better than Hope. You can make them work with some cleaning and greasing but better to go for something else.

    TheGingerOne
    Full Member

    As above was going to ask whether it’s a Thomson post as they are undersized for some reason

    spooky_b329
    Full Member

    No it’s not a Thomson post. To be honest the post is snug, I wouldn’t be able to get an additional coke can shim in there.

    Suspect it’s the clamp as it tightened up much more nicely with the Litespeed clamp.

    jeffl
    Full Member

    About 15 years back I had a Thomson seat post and a hope seat clamp on one bike for the ultimate slippage. 😀

    Stevet1
    Full Member

    Ditch the hope and buy any seat collar where the bolt threads into a steel insert that can rotate, salsa being the classic example of this but others also exist.

    z1ppy
    Full Member

    Friend has a early orange HT that he could never stop the seat slipping, I believe we have finally sorted it, by using a double seat clamp

    Search for double seat clamps

    spooky_b329
    Full Member

    Salsa clamp ordered 🙂

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