It was always my understanding that the r-22s "coning hinges" (whatever u want to call them they are still there) served mainly to lighten the rotor system. The logic being that the blades didn't need to be as heavy because they didnt need to take all the coning loads, the same went for the head. And these things being lighter allowed for lighter transmission and associated systems. Right??
One quick question, in that link that Dave Jackson posted i noticed what looked like some electrical connections on the top of the Mi-2 head. Are these for an anti-ice system or something?
thanks.