Rider San Francisco I
Bob Hall’s “Gee Bee” racers had dominated the 1931 Nationals. Behind Hall, at 237.738, was Ray Moore in the silver Rider No. 131, San Francisco I, built by West Coast engineer Keith Rider and powered by a 6-cylinder, 160-hp Menasco in-line engine. During a minor event in the 1931 Nationals, Moore had placed second to the Gee Bee Z and had actually beaten Wedell’s Wedell-Williams. That year, the Rider and Moore came in just 25 seconds behind Gehlbach.