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Perfect! Found some cheap 3DF cranks on ebay minus rings .. need to run 1x anyway.
Now I hope I can run them using 4130 BB on this frame which says BB86.5.
Did you just remove the old bearings and pressed the rotor ones in?
amey
danb
Heldring
I have been doing exactly that for the past 2 seasons - seems to be holding up fine.