Bottom bracket help!
#1
Thread Starter
Junior Member
Joined: Aug 2014
Posts: 11
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Bottom bracket help!
I recently broke a frame and im planing on getting a cheap replacement until i can get it fixed.
Im looking at this frame:New UD Full Carbon Fiber 700c Road Bike Frame Fork Headset 56 58cm BSA | eBay
However, it has a BB30 bottom bracket, and my current bike says it is BB86. The crankset i want to put on the new frame is an OVAL model 720. I have heard that it may be a GXP style crank spindle. What kind of adapter would i need to use a gxp in a bb30 bottom bracket?
https://www.pricepoint.com/_productim...8_kesl24_1.jpg
Im looking at this frame:New UD Full Carbon Fiber 700c Road Bike Frame Fork Headset 56 58cm BSA | eBay
However, it has a BB30 bottom bracket, and my current bike says it is BB86. The crankset i want to put on the new frame is an OVAL model 720. I have heard that it may be a GXP style crank spindle. What kind of adapter would i need to use a gxp in a bb30 bottom bracket?
https://www.pricepoint.com/_productim...8_kesl24_1.jpg
#2
Senior Member
Joined: Feb 2014
Posts: 1,883
Likes: 10
From: Southern Ontario
The frame you linked to says it has a BSA threaded BB?
It looks like the Oval cranks are either rebadged FSA or some look to be SRAM clones or rebadges.
If you look at the spindle it will either be 24 mm with a step down to 22 mm (GXP) or 24 mm without the step (FSA).
It looks like the Oval cranks are either rebadged FSA or some look to be SRAM clones or rebadges.
If you look at the spindle it will either be 24 mm with a step down to 22 mm (GXP) or 24 mm without the step (FSA).
#3
Full Member
Joined: Apr 2014
Posts: 457
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From: Central Oregon
Bikes: Redline Conquest Pro, Kona Cinder Cone, Trek Fuel EX8(RIP) Pivot Mach 5 frankenbike
First off, like Slash5 (BMW motorcycle enthusiast?) said, the frame you link to has a standard 68mm BSA thread BB and not a BB30, so you are kind of asking the wrong question. A quick peek at the specs of a Kestrel Legend explains some of the misconception since Kestrel lists a BB30 to threaded adapter as part of the BB. This is to allow a BSA bottom bracket to fit Kestrel's BB30 frame. This means the Oval Concepts crank is almost definitely a private labeled FSA Energy with a 24mm straight spindle. Since this is a standard crank for a 68mm BSA BB all you need is an FSA MegaExo BB or better yet the Wheels Mfg. version Threaded ABEC-3 BB for 24mm Cranks (Shimano, FSA, Etc.) - Gray since it comes with Enduro bearing that will last longer.
#4
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Joined: Aug 2014
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I just measured the diameter of the crank spindle. It is ~22mm on the non-drive side, so i guess that means its GXP?
Yea i guess the frame is a BSA, not sure where i saw BB30.
So anyway, what kind of adapter do i need to go from BSA to GXP?
Thanks!
Yea i guess the frame is a BSA, not sure where i saw BB30.
So anyway, what kind of adapter do i need to go from BSA to GXP?
Thanks!
#5
Thread Starter
Junior Member
Joined: Aug 2014
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So do i just need to put one of these on and im set?
https://www.ebay.com/itm/TruVativ-GXP...item3f4a7db567
https://www.ebay.com/itm/TruVativ-GXP...item3f4a7db567
#6
Senior Member
Joined: May 2015
Posts: 389
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So do i just need to put one of these on and im set?
https://www.ebay.com/itm/TruVativ-GXP...item3f4a7db567
https://www.ebay.com/itm/TruVativ-GXP...item3f4a7db567
Yup!





