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If it is taken that the rotor in inherently balanced then there is no flex inducement from that, the only other source of flex would be the crankshaft (whipping due to the engine running). I would be very surprised if there was more than 10 thou at the alternator rotor from that.Are you sure your rotor was "dialled" for run-out?I have 3 Nortons running with 10 thou clearance without any indication of rubbing. (one is a single)
If it is taken that the rotor in inherently balanced then there is no flex inducement from that, the only other source of flex would be the crankshaft (whipping due to the engine running). I would be very surprised if there was more than 10 thou at the alternator rotor from that.
Are you sure your rotor was "dialled" for run-out?
I have 3 Nortons running with 10 thou clearance without any indication of rubbing. (one is a single)
