• I don't think it's the flexibility of the carbon BB shell that's an issue, more the difficulties in getting tight press-fit tolerances in something that's moulded rather than machined. For ali frames which can have the BB shell machined after welding there's no excuses.

  • Yeah I can see the issue with that for sure. Only as good as your carbon forming techniques are. it does explain certain manufacturers moulding frames around Alu BB shells.
    It was always the Alu frames that creaked though. I rarely remember a carbon one doing so.

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