RE: David McFarlane - Slingshot F3A Australia
Have you spoken to Dave Macca he may have some photos of his early Slingshots back then they would have been his yellow,black and red colour scheme the Slingshot you have is the old 60 size from the late 1980s Peter Goldsmith flew them at the 1991 world championships powered by OS 61s it was the best 61 powered desgin of the late 80s early 90s in Australia so your YS110 should have more than enough power the 2 mtr Slingshot came out in 96-97 for the 120 I built Dave,s 2 Bigshot prototypes that he flew at the 2001 world championships which were YS140 powered