Rolls-Royce 'R' aero engine, no. 27, developed for the 1931 Schneider Trophy

Rolls-Royce 'R' aero engine, no. 27, with separated 150 mm length of 8 mm diameter fuel pipe, by Rolls-Royce Limited, England, 1931. This engine was developed for the 1931 Schneider Trophy seaplane and flying boat races. The 1931 races were held at Calshot Spit, Southampton Water, Hampshire, England.