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  1. #1
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    Just got a new stem - steerer question

    Hi all,

    I have just got a new stem and it fits on the steerer ok, however there is a bit of steerer left above it. I don't want to cut it so is it ok to just put a spacer on it and then replace the cap?

    Thanks

    Daven

  2. #2
    Senior Member RickB.'s Avatar
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    yes.
    Enjoy yourself, it's later than you think.

  3. #3
    Senior Member 1fluffhead's Avatar
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    Yes, but I always put my spacers under the stem first. So in this order I do it, spacer, stem, top cap.
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  4. #4
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by daven1986 View Post
    Hi all,

    I have just got a new stem and it fits on the steerer ok, however there is a bit of steerer left above it. I don't want to cut it so is it ok to just put a spacer on it and then replace the cap?

    Thanks

    Daven
    A spacer above the stem doesn't hurt anything. Just make sure the spacer is about 3mm above the steer tube...just like a stem would be.
    Stuart Black
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    Oh so a stem is MEANT to be above the steerer slightly? I thought that it shouldn't as then one screw would only have 1/2 a grip on the steerer. Thanks for the help, I just went for a test ride and all seemed well

  6. #6
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by daven1986 View Post
    Oh so a stem is MEANT to be above the steerer slightly? I thought that it shouldn't as then one screw would only have 1/2 a grip on the steerer. Thanks for the help, I just went for a test ride and all seemed well
    The stem should be slightly above the steer tube. 3mm is about 1/8". If the steer tube is flush with the top of the stem, the top cap can't compress the bearings in the headset properly. You'll end up with a loose headset...not a good thing.
    Stuart Black
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    Twisting Down the Alley. Misadventures in tornado alley.
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  7. #7
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    Quote Originally Posted by cyccommute View Post
    The stem should be slightly above the steer tube. 3mm is about 1/8". If the steer tube is flush with the top of the stem, the top cap can't compress the bearings in the headset properly. You'll end up with a loose headset...not a good thing.
    Not quite. Something has to be above the steerer but it doesn't have to be the stem. A spacer will do fine as long as the top edge of the steerer is 2-3 mm below what ever is up there.

    In fact, for carbon steerers, having the steerer project above the stem is desirable to assure the steerer fully supports the stem. Then a spacer above the stem is used to achieve the needed headset adjustment gap.

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    Cool it is around 3mm above I think. Can't be bothered to start changing around spacers right now so I will see how it goes - if I need more height to the bars I will have to change them around!

  9. #9
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    But more importantly, are you happy with the height of the stem? Spacers can be placed anywhere, above or below, or combination of both.
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  10. #10
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    Quote Originally Posted by cyccommute View Post
    The stem should be slightly above the steer tube. 3mm is about 1/8". If the steer tube is flush with the top of the stem, the top cap can't compress the bearings in the headset properly. You'll end up with a loose headset...not a good thing.
    Especially if it's a carbon steerer NO part of the stem should be above the steerer. The red line is draw where the uppermost pinch bolt rests - not above the steerer. On a pro assembled floor bike there is nearly always a 5mm spacer on top of the stem before the cap.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  11. #11
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    Yeah height of stem seems to be ok it is lower than the old one, however it has a steeper incline so I think it may level out!

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