A hub assembly for use with a horizontal axis, fluid-driven turbine generator, the hub assembly comprising: an outer hub member including a hub shell incorporating a plurality of torque transfer plates and including a plurality of turbine blade connectors, wherein each turbine blade connector of the plurality of turbine blade connectors is configured to receive a turbine blade; an inner hub member comprising a hub shaft, a plurality of hub shaft pivot members protruding outward from an outer surface of the hub shaft, and a plurality of torque receiving surfaces, wherein: the hub shaft is configured to transmit torque to promote rotation of the generator of a horizontal axis, fluid-driven turbine; each torque receiving surface of the plurality of torque receiving surfaces is arranged along a different plane of a plurality of intersecting planes extending through a central longitudinal axis of the hub shaft, each hub shaft pivot member of the plurality of hub shaft pivot members includes a curved outer surface, and each hub shaft pivot member and each torque receiving surface is arranged within an interior of the outer hub member; and a plurality of rocker members (146, 230, 232, 234), wherein each rocker member (146, 230, 232, 234) of the plurality of rocker members (146, 230, 232, 234) includes (i) an outer portion arranged to couple with a corresponding turbine blade connector of the plurality of turbine blade connectors, (ii) a central portion arranged to extend through a central aperture defined in a respective torque transfer plate of the plurality of torque transfer plates, and (iii) a rocker base arranged to extend into the interior of the outer hub member, wherein the rocker base of each rocker member (146, 230, 232, 234) comprises a first curved contact surface configured to abut a curved outer surface of a corresponding hub shaft pivot member of the plurality of hub shaft pivot members, and comprises a torque transmitting surface arranged to abut a torque receiving surface of the plurality of torque receiving surfaces of the inner hub member; wherein the plurality of rocker members (146, 230, 232, 234) is configured to cooperate with the inner hub member to permit the outer hub member to teeter relative to the hub shaft while torque is transmitted from the outer hub member via the plurality of rocker members (146, 230, 232, 234) to the inner hub member. an outer hub member including a hub shell incorporating a plurality of torque transfer plates and including a plurality of turbine blade connectors, wherein each turbine blade connector of the plurality of turbine blade connectors is configured to receive a turbine blade; an inner hub member comprising a hub shaft, a plurality of hub shaft pivot members protruding outward from an outer surface of the hub shaft, and a plurality of torque receiving surfaces, wherein: the hub shaft is configured to transmit torque to promote rotation of the generator of a horizontal axis, fluid-driven turbine; each torque receiving surface of the plurality of torque receiving surfaces is arranged along a different plane of a plurality of intersecting planes extending through a central longitudinal axis of the hub shaft, each hub shaft pivot member of the plurality of hub shaft pivot members includes a curved outer surface, and each hub shaft pivot member and each torque receiving surface is arranged within an interior of the outer hub member; and a plurality of rocker members (146, 230, 232, 234), wherein each rocker member (146, 230, 232, 234) of the plurality of rocker members (146, 230, 232, 234) includes (i) an outer portion arranged to couple with a corresponding turbine blade connector of the plurality of turbine blade connectors, (ii) a central portion arranged to extend through a central aperture defined in a respective torque transfer plate of the plurality of torque transfer plates, and (iii) a rocker base arranged to extend into the interior of the outer hub member, wherein the rocker base of each rocker member (146, 230, 232, 234) comprises a first curved contact surface configured to abut a curved outer surface of a corresponding hub shaft pivot member of the plurality of hub shaft pivot members, and comprises a torque transmitting surface arranged to abut a torque receiving surface of the plurality of torque receiving surfaces of the inner hub member; wherein the plurality of rocker members (146, 230, 232, 234) is configured to cooperate with the inner hub member to permit the outer hub member to teeter relative to the hub shaft while torque is transmitted from the outer hub member via the plurality of rocker members (146, 230, 232, 234) to the inner hub member.