Mast Moment Measurement in Hingeless Rotors
What is the object of this exercise? Are you troubleshooting the Mast Moment Indicator or is this an academic theory project? If you're troubleshooting, contact the manufacturer or local tech. rep.
By the way, the BO-105 and BK-117 main rotor heads are not strictly 'hingeless", although they don't have flapping and drag hinges they do have feather/pitch-change hinges.