Because of the high established demand on a rotor head being used in a mechanics driven by a petrol engine, the equipment is quite different from other rotor heads.
Here flybars with 5 mm Ø are used, and the ball collets, the control bridge and the ballraces are applicable for this dimension. The aluminium centre piece accounts for the necessary precision of the teetering of the thrust bearing shaft.
Rotor head for petrol mechanics, for 10 mm Ø rotor shaft.