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Thread: stem angle?

  1. #1
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    stem angle?

    I have a cross check stock build. I want to raise my bars about an inch. The stem that came on my bike has a 96 degree rise. How much more rise do I need to get an inch? I was thinking of either a 105 or 115 deg stem.

    Also with more rise do I need to get a slightly longer stem to maintain my current reach?

  2. #2
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    It depends on the length of your current stem.
    If we take a stem level with the ground as 0deg. Then the rise from the stem will be the length*sin(angle). The reach will be length*cos(angle).
    Remember that you headtube is 72deg so a 96deg stem will actually be an angle of 24deg. 105deg will be 33deg and 115deg will be 43deg.
    Have fun with the math. Remember to make sure your calc is using degrees and not radians in its calculation of sin() and cos().

    Craig

  3. #3
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    Here's a stem angle/length/height chart:
    habcycles stem fit chart

  4. #4
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    Quote Originally Posted by Forrestf
    Here's a stem angle/length/height chart:
    habcycles stem fit chart
    Now that makes it too easy to understand

    Can you tell I'm an engineer?

    Craig

  5. #5
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    I think I'll go with the chart. No offense Craig

    Thanks guys.

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