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  • Nothing personal

    Ditto, I just thought I'd try to limit your embarrassment by being more explicit, since you keep claiming that 30mm aluminium is noticeably stiffer than 24mm steel

    found some deflection data that seem to confirm my feelings

    Yes, data which confirms our bias is the best kind. Best to ignore any which doesn't :)

  • since you keep claiming that 30mm aluminium is noticeably stiffer than 24mm steel

    You're right, my bad. I shouldn't have used the words steel and aluminium. You are better than me.

  • You are better than me

    Seems unlikely.

    Whatever you think you noticed when you changed from 105 to Praxis, it seems equally unlikely that the BB spindle diameter played any part in it.

  • The problem is that there is so many factor to take in account, frame material, thickness, wheels, quick release skewer, big chainring, tyres pressure etc. to name but a few.

    Testing in labs does not always translate to the real world.

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