Not sure that other than the name Slingsby, aileron shape and general construction method that the Falcon III had any onwards linkage to the T21,
As far as I understand, the Falcon III was an enlarged Falcon 1 which was in turn the Falke designed by Alexander Lippisch.
The T21 was an enlarged Grunau Baby designed by a Mr Schneider - in fact there is a German joke that Slingsby meant to build a Grunau Baby but used inches instead of centimetres and it came out a bit big!
We took our Sedbergh to Fairford a few years back - a lot of ex ATC guys showed up telling tales of going solo after seventeen four minute circuits etc!! Elfin safety??
Last edited by astir 8; 13th May 2013 at 13:02.