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pretty sure that is normal that the hollowgram axle is a very tight fit, try putting it in the freezer before installing it...
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Yep - freeze the axle.
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Bb30 bearing. Is there a neat way to pop them out safely
If you're currently using DA cranks, then presumably you don't actually have BB30 bearings in there at the moment, you have adapter cups containing 24mm bearings. It shouldn't harm anything to pop the cups out with their bearings still in place.
If you want to do a proper test fit, you'll have to take the cups out anyway, as they will be projecting out to 86mm wide to suit Shimano cranks, whereas the Hollowgram cranks will push almost right up to the 68mm BB shell on the shorter axle.
danb
Howard
gbj_tester
@hippy
Bb30 bearing. Is there a neat way to pop them out safely so I can reuse them or are they one press, one use? Hollowgram axles don't fit through the ones in there currently. Well not without hammer.