Need help to build a sub 8Kg bike- Mtbr.com
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  1. #1
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    Reputation: sergio_pt's Avatar
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    New question here. Need help to build a sub 8Kg bike

    Hello weight weenies,

    I've been having fun with my lightweight bike for 8 or 9 years now since I built it at that time. Wow that went fast... I built it for just over 8Kg and it has been a great bike, riding rocky trails, fire roads, tarmac, everywhere without any issue!

    I would like to upgrade the bike to drop some weight and thought about starting with wheels. I started searching for carbon rims but there's no 26inch carbon rim to be found anywhere. AX lightness has them but they are tubulars... which I'm not a fun of.

    Are there any other options? Or is it better to start searching for all the parts for a new bike sub 8kg bike? 27.5inch? or 29inch?

    What parts should I select for a recent sub 8kg bike?


    Thanks!

  2. #2
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    Light-bicycle do 26" carbon rims. I've just bought one.
    Kes

  3. #3
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    Cool. Didn't know about that website. Problem is their lightest rim is heavier than my ztr alpine rims.

  4. #4
    Maromero
    Reputation: doccoraje's Avatar
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    Carbonfan also still stocks 26ers, 270 gr for the narrow ones

  5. #5
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    I think light bicycle might do feather weight versions of their rims. It's worth asking them. They are a great company to deal with!
    Kes

  6. #6
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    Didn't know carbonfan either.
    Aren't this both companies chinese?
    Are they quality carbon rims?

  7. #7
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    I don't know about carbonfan but I can attest to the quality of light-bicycle rims! My friend has a set that has lasted 3 years of hard riding so far.
    Kes

  8. #8
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    That's great! Need to do some more homework and searching for the right parts for the complete bike.

  9. #9
    Maromero
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    Quote Originally Posted by fxrextreme View Post
    I don't know about carbonfan but I can attest to the quality of light-bicycle rims! My friend has a set that has lasted 3 years of hard riding so far. Kes
    Mine lasted 4 years, until the rear one gave up, (must say it was user error, not to blame LB) but, searching for the replacement, the best cost-weight relation I found was Carbonfan, 27.5, 25 mm IW, 300 gr, $200 each
    Attached Thumbnails Attached Thumbnails Need help to build a sub 8Kg bike-rim-cf-1.jpg  

    Last edited by doccoraje; 5 Days Ago at 07:41 AM.

  10. #10
    Hardtail Steel Forever
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    If you're looking for more budget, find some ZTR 355's. I built up a set with DT240s's and Sapim CX ray spokes and the wheelset came in at 1265g including valves and tape. I've seen them NOS on ebay for as cheap as about $15.
    WTB: Med Bontrager Ti Lite, PM Me...

  11. #11
    Elitest thrill junkie
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    Quote Originally Posted by jestep View Post
    If you're looking for more budget, find some ZTR 355's. I built up a set with DT240s's and Sapim CX ray spokes and the wheelset came in at 1265g including valves and tape. I've seen them NOS on ebay for as cheap as about $15.
    And Lasers are just as light and strong as x-rays and way cheaper. Sapim lays down some heavy marketing BS on their spokes, but bladed is for looks when it comes to mountain bikes.
    "It's only when you stand over it, you know, when you physically stand over the bike, that then you say 'hey, I don't have much stand over height', you know"-T. Ellsworth

    You're turning black metallic.

  12. #12
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    The Sapim spokes have confusing names. The lightest is in fact the CX Super spoke, which is lighter than the CX-Ray. Iíve used them for 6 wheels recently, all of which have held up fine.

    If the reviews are to be believed, they are not only the lightest steel spokes ever have been made, but also very strong due to the swaging.

    https://www.starbike.com/en/sapim-super-cx/


    Sent from my iPhone using Tapatalk

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