A rotor system for a reactive drive rotary wing maintains the rigidity of the rotor and eliminates play between flight controls and the rotor by mounting swashplate actuators to a flange rigidly secured to the mast. The approach includes using attachment pieces which fit into an area of reduced thickness of the anchor sheet which surround a cut away of the anchor sheet. The coding sequences can be used in DNA constructs or expression cassettes for transformation and expression in plants and bacteria. The detachable seat arrangement includes a pair of fabric frame holders securely mounted on the upper attaching portions of the rear supporting legs respectively, and a pair of securing members provided at the seat portion of the seat fabric for detachably mounting the fabric supporting frame onto the front supporting frame. The tricycle includes a drive system coupled to the frame and a wheel hub fixedly coupled to the first drive shaft.