Flew the Bicester one in the 70's. Aerotow behind very slowly flown Chipmunk to 2000ft then climbed in a gaggle in strong thermal to 5500ft. Then got seriously frightened when I looked down between my legs. Only just made it the 2nm back to the airfield. Only time I ever felt 'vertigo' when flying.
rts
edited to add:
Agree no need for instruments (Bicester a/c had none when I flew it) -wind up your trouser-leg was a good pitot head and you could hear and feel the upper surface flapping as separation occurred close to the stall.
Last edited by rodthesod; 7th Jun 2006 at 13:56.