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Granville Bros Model Y Senior Sportster



Chief engineer Bob Hall’s “Gee Bee” (for Granville Brothers) racers had dominated the 1931 Nationals. In the Thompson, Hall took a Model Y Senior Sportster to fourth and Lowell Bayles flew a Wasp Jr.-powered Model Z Super Sportster to victory.



2 seat
2 built
X11049        Wasp C engine
X715Y        Lycoming


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