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FSA SL-K Light cranks and Shimano BB

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FSA SL-K Light cranks and Shimano BB

Old 04-03-09, 07:04 AM
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Herbie53
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FSA SL-K Light cranks and Shimano BB

FSA's newer carbon cranks (like the SL-k Light) use a more narrow BB cup that allows room for a spring washer to keep the bottom bracket at the correct pressure after the bolt bottoms out and is torqued to spec in the spindle.

While the cranks will go into a Shimano BB they will bottom out on the cup and put to much pressure on the BB if you torque them to spec (~35ft-lbs).

Has anyone sorted out a way to space the left crank arm out and still be able to properly torque it down? Perhaps a spacer of some sort inside the spindle for the bolt to bottom out on?

I ask because I'm on my second FSA BB after just 1200 or so miles, and do not like having to replace this frequently.

PS --- please don't tell be to buy the crazy expensive FSA ceramic BB
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Old 04-03-09, 07:22 AM
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get a shimano crank and BB?
I don't see a viable option of removing width without digging into the frame.
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Old 04-03-09, 08:22 AM
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Originally Posted by AEO View Post
get a shimano crank and BB?
I don't see a viable option of removing width without digging into the frame.
Why not just a spacer inside of the spindle so the bolt bottoms out and leaves room for the spring washer? I realize this will increase the Qfactor a couple of millimeters (or less), but I'm not that sensative.
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