BB question
#1
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Joined: Mar 2014
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BB question
I've been gathering used parts for a build. Frame: Origin 8 Adrenaline uses a BB30, I bought a SRAM Red Carbon crankset 130bcd.
Question: what exact part size do I need for the bottom bracket. I know BB30 - bear with me(bike clueless).
Any random link would help. or specific sizing. Could it be BB30 130bcd? Thanks for your help!
Question: what exact part size do I need for the bottom bracket. I know BB30 - bear with me(bike clueless).
Any random link would help. or specific sizing. Could it be BB30 130bcd? Thanks for your help!
#2
Senior Member
Joined: Feb 2014
Posts: 177
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Bearings press in.
https://www.youtube.com/watch?v=IoUNL8FDweQ
https://www.amazon.com/gp/product/B002SR9B0I/
https://www.amazon.com/gp/product/B00426ENBU/
Wait.... is that a pic of your frame? Not BB30, so you may be in store for some disappointment.
https://www.youtube.com/watch?v=IoUNL8FDweQ
https://www.amazon.com/gp/product/B002SR9B0I/
https://www.amazon.com/gp/product/B00426ENBU/
Wait.... is that a pic of your frame? Not BB30, so you may be in store for some disappointment.
Last edited by BikeAnon; 03-01-14 at 08:50 PM.
#3
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Joined: Dec 2009
Posts: 28,682
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From: Houston, TX
Bikes: 1990 Romic Reynolds 531 custom build, Merlin Works CR Ti custom build, super light Workswell 066 custom build
Is the SRAM crank BB30? It is not just the right BB you need but the right crank also.
#4
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So are you saying that the frame and the crankset are not compatible? No conversion kit?
https://www.adrenalinebikes.com/store...oductid=126256
https://www.adrenalinebikes.com/store...oductid=126256
Last edited by TriDave; 03-01-14 at 09:24 PM.
#6
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No, bought on ebay. Obviously by inexperience. Frame = English Thread. Correct? Crank = BB30. Don't know one from the other. Is there a conversion kit? If there is not a kit, then I will resell the crankset on ebay. So if I purchase another SRAM Red crankset, are you saying that it has to be a english thread crankset?
#7
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Joined: Feb 2014
Posts: 177
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That sucks. But, those cranks fetch a good price. Maybe you'll even make money with spring approaching.
You need a crank that is compatible with any English Thread BB.
So if you're going with Red, you need one that has outboard bearing cups. Let me go look.....
I believe you'll be looking to get a GXP BB.
https://www.sram.com/sram/road/products/sram-red-bb
The cups will screw in to your frame, leaving you with outboard bearings. Then the drive-side crank arm will slip in. Attach the non-drive side and you're done.
https://www.youtube.com/watch?v=N9y3RlVRGz8
EDIT:more useful video:
https://www.youtube.com/watch?v=RB1wcwlmsRc
You need a crank that is compatible with any English Thread BB.
So if you're going with Red, you need one that has outboard bearing cups. Let me go look.....
I believe you'll be looking to get a GXP BB.
https://www.sram.com/sram/road/products/sram-red-bb
The cups will screw in to your frame, leaving you with outboard bearings. Then the drive-side crank arm will slip in. Attach the non-drive side and you're done.
https://www.youtube.com/watch?v=N9y3RlVRGz8
EDIT:more useful video:
https://www.youtube.com/watch?v=RB1wcwlmsRc
Last edited by BikeAnon; 03-01-14 at 09:46 PM.
#8
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So I'm not completely screwed. I can keep the frame and the same SRAM RED crankset that I bought , but I need to use a GXP BB . Thank You so much for your help. I see the threads on the GXP BB. Hopefully this will work!
#9
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Joined: Feb 2014
Posts: 177
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No.... You're still screwed. Sorry.
The BB30 crankset will not fit, and there is no conversion that will make it work with your frame (that's worth doing).
If your heart is set on Red, you need to sell the crank you have, and buy the GXP version of Red.
BB30 bearings are internal to the frame, so nothing about it is compatible with your frame.
The BB30 crankset will not fit, and there is no conversion that will make it work with your frame (that's worth doing).
If your heart is set on Red, you need to sell the crank you have, and buy the GXP version of Red.
BB30 bearings are internal to the frame, so nothing about it is compatible with your frame.
#14
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Joined: Dec 2009
Posts: 28,682
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From: Houston, TX
Bikes: 1990 Romic Reynolds 531 custom build, Merlin Works CR Ti custom build, super light Workswell 066 custom build
The BB30 crank spindle is not long enough for threaded in outboard bearings. And the spindle diameter is too big for internal bearings. Sorry but you do need the recommended crank and threaded outboard bearings.
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