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  1. #1
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    Anyway to shorten the stem on this bike

    The bike:

    BFOLD 7 Folding Bike, City Bike MATEX - All Bikes Cycling - On sale at Decathlon.co.uk

    I have been using this daily to work and back for one month. Cheap compared to big brands but still like it. Although not particular excellent in any respect (not very small when folded, not very fast, not very light etc) but nor any issue. It's sturdy and value for money. I can just lock it anywhere I want without worrying it being stolen and ride happily in the rain without thinking too much about maintenance.

    Now I want to lower the stem to make it more sporty and hence increase some speed (got some strong head wind recently and there will be more when winter comes). I have thought of changing the handlebar to a rode bike type but that will affect the fold-ability, and also not sure if the shifters and brakes can be installed properly. So any idea what short stem for folding bike I can buy to replace the existing one? Are these stems interchangeable? Thanks.
    Last edited by nz6666; 10-10-14 at 04:16 AM. Reason: more clear

  2. #2
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    well nothing a tig welding can't dọ. just find a local welder and ask him to cut and weld back. had mine done for $40

    1.jpg

  3. #3
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    I never thought of that.. Thanks.

    But at the meantime, found this
    Dahon D7 ? Stem Mod | The Everyday Cyclist

    It looks like a easier solution, although it may affect fold-ability (not sure how much). Anyone has similar experience?

  4. #4
    jur
    jur is offline
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    A pic of what it looks like at the top would be good. If the whole thing is one solid structure, then sawing the top off and installing a bike stem might work, if the diameter is 1-1/8".
    My folding bike photo essays www.dekter.net/

  5. #5
    PatronSaintOfDiscBrakes dynaryder's Avatar
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    If you don't want to chop anything,you could always install a riser bar and flip it upside-down.

    C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport/Qualifier,Dahon Speed Pro TT,Brompton S6L

  6. #6
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    Quote Originally Posted by jur View Post
    A pic of what it looks like at the top would be good. If the whole thing is one solid structure, then sawing the top off and installing a bike stem might work, if the diameter is 1-1/8".
    Here is a pic from internet. The stem (or headset? Don't know what to call it) has a gradient size(bigger at the base and smaller at the top). The size near to the top is about 30 mm. At the end is a clamp to fix the handlebar. The only way I can think of is to remove the clamp at the top then try to find a stem big enough to put on the original stem.
    Attached Images Attached Images

  7. #7
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    Quote Originally Posted by dynaryder View Post
    If you don't want to chop anything,you could always install a riser bar and flip it upside-down.
    That's what I am doing now, the reach still not enough for me. But probably this is the best I can get, because even if I managed a drop bar on it, it will not fold as well because the handle bar will be tucked between the wheels when folded. So probably that's it for me. Thanks.
    Last edited by nz6666; 10-14-14 at 05:41 AM.

  8. #8
    jur
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    The exact size is important. 30mm is encouraging, it needs to be 28.8mm. If you can borrow a vernier caliper from a hardware shop that would help.
    My folding bike photo essays www.dekter.net/

  9. #9
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    I was going to suggest the same, but won't adding a stem cause the same issue. i was going to suggest just pushing a high rise bar forward, bug probably won't work either, watched a youtube video on it, and because goes btwn the wheels, you can't anymore depth in there
    http://www.youtube.com%2Fwatch%3Fv%3...pdwh0xCeqwRR_w



    Quote Originally Posted by nz6666 View Post
    That's what I am doing now, the reach still not enough for me. But probably this is the best I can get, because even if I managed a drop bar on it, it will not fold as well because the handle bar will be tucked between the wheels when folded. So probably that's it for me. Thanks.

  10. #10
    coprolite fietsbob's Avatar
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    often the bar riser mast is a quill-wedge inside the fork steerer, that you tighten while the stem is folded over.

    That is what My Brompton uses and the folding mast on my Bike Friday Travel bike. threaded headsets.

    fork steerer ID in both cases is 1"

  11. #11
    Senior Member bhkyte's Avatar
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    I have done a few go faster folders using drops turned upside down and chopped back. See my threads for more pictures as I rarely post from a pc that accepts pictures uploading.
    Bromptom with dahon andros stem extender advice
    Scroll down to get the pictures of bikes I have tinkered with
    Drops don't tend to fold well. But this arrangement does.
    Bikes; dual drive Mezzo X2 bullbar previously owned brompton with mods. Also 3 birdies + downtube FS

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