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At what torque does it start destroying the star nut though..?
Star nuts are really hard to break. 5Nm is sufficient to make the adjuster screw almost impervious to self loosening, whereas the 1-2Nm required to set the bearing preload isn't.
I use 5Nm on glued-in nuts,which are nowhere near as resistant to pull out as star nuts. Expanding bungs can also easily resist this much bolt tension.
Obviously Tester Top Caps can take it too.
I didn't realise this was a thing. At what torque does it start destroying the star nut though..?