A rotor assembly for a wind turbine is provided. The rotor assembly includes a central hub with a central rotation axis, and a plurality of vanes. Each of the vanes is attached to the central hub, and each of the vanes includes in part a cable system which cooperates with each respective vane and the central hub. The cable system includes a pair of cables. Both of the cables are aligned with the longitudinal axis of the respective vane, viewed along the central rotation axis. And both of the cables are on either side of a plane covered by the longitudinal axis of the respective vane. The plurality of vanes are only structurally interconnected via the central hub, and the cable system of each of the vanes has only one single pair of cables.