2011 TUMBULGUM SPEEDWAY
The speedway was built on Tumbulgum Farm at Byford, a southern suburb of Perth WA, Tumbulgum was promoted by Dirt High Promotions, Willie Thomson and in conjunction with the Speedway Motorcycle Club of WA, racing consisted of Motorcycle Solo and Sidecar racing.
2011 TUMBULGUM SPEEDWAY PROGRAMME
2012 WA SIDECAR STATE TITAL
The year was 2012 and West Australian Sidecar Championships were hosted by Dirt High Promotions at the Tumbulgum venue.
(Pictured O'Brien and Maynard photo: unknown)