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  1. #1
    dances with bicycle 46x17's Avatar
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    Stem Angle Match problem

    I have a 120mm stem at 0 degree with riser bars. The rise is 45 mm.
    What angle stem would I need to get to achieve the same bar height with flat bars?
    The stem can also be a bit longer up to 130mm.

    Thanks!
    Life can only be understood backwards; but it must be lived forwards.
    -- Soren Kierkegaard

  2. #2
    如果你能讀了這個你講中文 genericbikedude's Avatar
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    First, this is basic trigonometry. You need the pytagorean theorum and the sine/cosine/tangent formulas. Wikipedia will help you.

    Second, and not to snark, why not just use flat bars?

  3. #3
    dances with bicycle 46x17's Avatar
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    Quote Originally Posted by genericbikedude

    Second, and not to snark, why not just use flat bars?
    Because the current height is very comfy. So to keep comfy height I will need a different stem.

    Thanks for the tip.
    Life can only be understood backwards; but it must be lived forwards.
    -- Soren Kierkegaard

  4. #4
    如果你能讀了這個你講中文 genericbikedude's Avatar
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    oh, I get it. i thought you were trying to go from flats to a riser/deep drop combo. that would be stupid.

  5. #5
    Senior Member
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    this was posted before somewhere, but couldn't find the exact post.

    does this help?

  6. #6
    dances with bicycle 46x17's Avatar
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    I figured it out. I need approx. an additional 20 deg rise.
    Life can only be understood backwards; but it must be lived forwards.
    -- Soren Kierkegaard

  7. #7
    dances with bicycle 46x17's Avatar
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    Thanks for all your help!
    Life can only be understood backwards; but it must be lived forwards.
    -- Soren Kierkegaard

  8. #8
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    Quote Originally Posted by 46x17
    I figured it out. I need approx. an additional 20 deg rise.
    with a 130mm extension??? that's what i'm getting after studying that chart.

  9. #9
    dances with bicycle 46x17's Avatar
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    Yes. The chart rules btw!
    Life can only be understood backwards; but it must be lived forwards.
    -- Soren Kierkegaard

  10. #10
    Cornucopia of Awesomeness baxtefer's Avatar
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    not to pick nits, but the "stack height" of your new stem is going to affect rise as well.
    {o,o**
    |)__)
    -"-"-

    O RLY?

  11. #11
    dances with bicycle 46x17's Avatar
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    What is stack height?

    You talking about spacer or the stem steertube clamp part?

    Regardless, if i ever go flat I will use the same model stem (with different angle) and no spacers anyway. I just put on some flat bars and flipped the current stem. To simulate a potential new setup. Made over the bar skids suck. So risers are staying until I get over the poser tricks.
    Life can only be understood backwards; but it must be lived forwards.
    -- Soren Kierkegaard

  12. #12
    Cornucopia of Awesomeness baxtefer's Avatar
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    stem steertube clamp bit. some are longer than others.
    shouldn't matter thaaaaaat much though.
    {o,o**
    |)__)
    -"-"-

    O RLY?

  13. #13
    dances with bicycle 46x17's Avatar
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    Quote Originally Posted by baxtefer
    stem steertube clamp bit. some are longer than others.
    That is true.
    Life can only be understood backwards; but it must be lived forwards.
    -- Soren Kierkegaard

  14. #14
    Direct Hit Not Required BlastRadius's Avatar
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    Is this new flat bar for your bike?

  15. #15
    Banned.
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    Quill stems rock.

  16. #16
    如果你能讀了這個你講中文 genericbikedude's Avatar
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    Quote Originally Posted by BostonFixed
    Quill stems rock.
    no they dont.

  17. #17
    dances with bicycle 46x17's Avatar
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    Quote Originally Posted by BlastRadius
    Is this new flat bar for your bike?
    I desired one for about an hour today for my bike.

    Then I managed to try one out (friends bar) and decided that my risers are staying.
    Life can only be understood backwards; but it must be lived forwards.
    -- Soren Kierkegaard

  18. #18
    mortar and f***ing pestle redcurrycelt's Avatar
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    "Quill stems rock"

    I'm starting to feel that way too.. I dig the look of forged quill stems more than the big blobby funky threadless ones, for sure, especially with 1-1/8" steerers..

    Obviously the connection is not as solid with quills (nor as stiff, probably), but there are certainly some functional and aesthetic pluses.

  19. #19
    dances with bicycle 46x17's Avatar
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    salsa makes/made some very nice threadless stems. They are tigged steel and don't have that ugly fatness that other stems have. I also really like the look of the Thomson Elite stems although those are very beefy.
    Life can only be understood backwards; but it must be lived forwards.
    -- Soren Kierkegaard

  20. #20
    we're here, we steer!! mrRed's Avatar
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    I love the look of quill stems, but apparently threadless is really the way to go from a mechanical standpoint.
    Culture? Art? Making a difference? Hey, go **** yourself. We're too busy drinking, doing drugs, trying to **** random people and you want us to make money on top of all that? Really?

    Well, ****. I don't give a ****.

  21. #21
    Slower than you Judah's Avatar
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    You back in the city clayton? I'm pissed, it was so nice out and I wanted to ride today but I'm all sick...

  22. #22
    Senior Member 1fluffhead's Avatar
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    Quote Originally Posted by 46x17
    my risers are staying.
    On-One Mary bar right? How you liking them so far? I have been thinking about them myself for a change. Any pics?

  23. #23
    roll'em high shants's Avatar
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    **** threadless.

  24. #24
    如果你能讀了這個你講中文 genericbikedude's Avatar
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    Quote Originally Posted by shants
    **** threadless.
    **** your dumbass 34mm flat wrench

  25. #25
    Frankly, Mr. Shankly absntr's Avatar
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    Quote Originally Posted by 46x17
    salsa makes/made some very nice threadless stems. They are tigged steel and don't have that ugly fatness that other stems have. I also really like the look of the Thomson Elite stems although those are very beefy.
    Salsa does indeed. Super stiff, sleek to match a thinner tube look.




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