After seeing the prototype of Geoff  McBroom’s rogallo at the Southdown Gliding Club meeting in 1972 and its using  of aluminium tube for the frame. I decided to build No3 using aluminium tubing.  The sail was cut directly from an army surplus cargo parachute but it was too  porous. The sail did have battens in the trailing edge to overcome the stretch  of the material but with no top rigging to maintain the reflex the glider was  divergent. The film shows the glider being flown on the Southdown’s and on the  Isle of Wight and was the first to be flown there. Pete Scott who lives on the  island showed me around and many of the sites we found are still in use for  hang gliding or paragliding. When flying off Wrotham Hill a storm front came in  with rain and strong squalls. The rain ‘proofed’ the material and with the  increased wind speed I found myself at about 300ft above the hill. I managed to  keep control but was pleased to get back on the ground in one piece.
        It was time to design a more  stable and efficient wing.
        If you look carefully at the nose of the wing you will see it is   truncated. The keel has a "T" piece and the wing tubes are hinged at the end of   the "T" bar. This reduced the wing tube length but maintained the span. The "T"   had a foam insert which made it a thicker leading edge section and acted as   cushioning if the nose went in.