A construction toy set containing a plurality of interlocking pieces, wherein each of said interlocking pieces contains at least one linkage construct and each linkage construct includes: a pivot hub having a first surface and an opposite second surface, wherein said first surface and said second surface are parallel; detents formed in both said first surface and said second surface of said pivot hub, wherein said detents are arranged in a radial pattern; a first yoke arm coupled to said pivot hub, wherein said first yoke arm has a first interior surface and a first exterior surface, wherein said first interior surface and said first exterior surface are arranged perpendicular to said first surface of said pivot hub; a first protrusion extending from said first interior surface of said first yoke arm, wherein said first protrusion is sized to be received by one of said detents; a second yoke arm coupled to said pivot hub, wherein said second yoke arm has a second interior surface and a second exterior surface, wherein said second interior surface and said second exterior surface are arranged perpendicular to said first surface of said pivot hub; and a first gap space separating said first interior surface of said first yoke arm from said second interior surface of said second yoke arm, wherein said first protrusion extends into said first gap space, and wherein said first gap space is sized to receive and retain said pivot hub, wherein some of said plurality of interlocking pieces contain a first linkage construct and a second linkage construct joined together into a single piece, and characterised in that a second gap space is disposed between an exterior surface of a yoke arm of said first linkage construct and an exterior surface of a yoke arm of said second linkage construct, wherein said second gap space is sized to receive and retain said pivot hub. a pivot hub having a first surface and an opposite second surface, wherein said first surface and said second surface are parallel; detents formed in both said first surface and said second surface of said pivot hub, wherein said detents are arranged in a radial pattern; a first yoke arm coupled to said pivot hub, wherein said first yoke arm has a first interior surface and a first exterior surface, wherein said first interior surface and said first exterior surface are arranged perpendicular to said first surface of said pivot hub; a first protrusion extending from said first interior surface of said first yoke arm, wherein said first protrusion is sized to be received by one of said detents; a second yoke arm coupled to said pivot hub, wherein said second yoke arm has a second interior surface and a second exterior surface, wherein said second interior surface and said second exterior surface are arranged perpendicular to said first surface of said pivot hub; and a first gap space separating said first interior surface of said first yoke arm from said second interior surface of said second yoke arm, wherein said first protrusion extends into said first gap space, and wherein said first gap space is sized to receive and retain said pivot hub, wherein some of said plurality of interlocking pieces contain a first linkage construct and a second linkage construct joined together into a single piece, and characterised in that a second gap space is disposed between an exterior surface of a yoke arm of said first linkage construct and an exterior surface of a yoke arm of said second linkage construct, wherein said second gap space is sized to receive and retain said pivot hub.