EBB carbon frame- Mtbr.com
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  1. #1
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    EBB carbon frame

    Is it safe to use a EBB with a carbon frame? Bike is a 2015 Specialized Stumpjumper World Cup. PF30 with GXP cranks. 12x142 solid axle rear.

    The rear axle and dropout configuration pretty much sucks for using the DMR tensioner, I've also used a cheap spring style but it skipped under heavy power (I'm 6'4" and almost 200lbs).

    I'd love to be able to use a EBB and ditch a tensioner altogether. I'm the original owner of the bike and I won't do anything that could potentially void the warranty.

    Thanks for any input. I can post pictures of the BB area if needed.
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  2. #2
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    I take it that's a no?
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  3. #3
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    aluminum BB shell? if so yes! Carbon bb shell? it is a risky move.

  4. #4
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    http://forums.mtbr.com/singlespeed/w...ic-949407.html

    I used the BB30 version on my Chinese carbon and it's been great.

    EBB carbon frame-carbonss.jpg
    Bikes, lots'o bikes

  5. #5
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    Quote Originally Posted by joshhan View Post
    http://forums.mtbr.com/singlespeed/w...ic-949407.html

    I used the BB30 version on my Chinese carbon and it's been great.

    Click image for larger version. 

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    Thanks for the link!
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  6. #6
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    I think that it really depends on how the frame was designed. If it has a solid carbon tube for the BB shell then maybe. If it has a bunch of holes or it it only round tube where the BB presses in and nothing in between then I would say absolutely not. And not all alloy shells are strong enough either, I saw a knock off/ no name frame with an alloy shell that buckled with an ebb installed. Maybe check with the manufacturer?
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  7. #7
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    Quote Originally Posted by PeopleForScience View Post
    I think that it really depends on how the frame was designed. If it has a solid carbon tube for the BB shell then maybe. If it has a bunch of holes or it it only round tube where the BB presses in and nothing in between then I would say absolutely not. And not all alloy shells are strong enough either, I saw a knock off/ no name frame with an alloy shell that buckled with an ebb installed. Maybe check with the manufacturer?
    Full carbon tube. I called the shop I bought it from and they said Specialized probably wouldn't warranty the frame if it had any compression damage from a ebb. Another shop said the same thing. I'm not willing to risk it...
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