The Model Z was the first Gee Bee Super Sportster, preceding the Model R. The sole example, NR77V, won the Thompson Trophy in September 1931, flown by Lowell Bayles. Re-engined with a 750-hp R-1340 Wasp, it crashed at Wayne County Airport during a world speed record attempt on 5 December 1931, killing Bayles. The replica which is now in the Museum of Flight, Seattle, has larger dimensions to make it easier to fly. Photo from: Wayne State University