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  • Hi everyone, help needed!

    So I'm putting together a bike that has higher number of carbon parts than I've ever dealt with. At this stage, I'm finding particularly challenging to decide on the carbon fork steerer length.

    I believe with carbon steerer, there should always be a spacer on top of the stem, is that correct? If so, I'm using a compression plug (pic 1), and with the spacer on top of the stem, the spacer takes full heigth of the first aluminum bit (pic 2).

    Now when I assemble this whole things together (pics 3,4,5), it appears that the compression plug only maybe reaches the middle of the lower stem bolt (or slightly higher). My understanding of the compression plug for carbon steerer was that it's function is to protect the streerer from clamping force of the stem (also headset preload). Question - with my setup, is the compression plug doing its job of should I get a different - taller one?

    Thanks!

  • My understanding of the compression plug for carbon steerer was that it's function is to protect the streerer from clamping force of the stem

    If that's what your fork manufacturer says...

    In practice, all my carbon forks are surviving just fine with a thin (6mm height) bonded-in plug roughly in the middle of the stem. I wouldn't have any concerns about using the set up you've illustrated.

    This would obviously also be a good time to point out that you can get a stem cap with an integrated spacer to tidy up the area on top of the stem :)

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