The cam cover is asymmetrical. From here the work is divided into left and right separately.

R21 6 July 1931 First new 1931 engine, passed final inspection. 2,292 hp (1,709 kW). Installed in S.6B, S1595, for first flight 29 July.

R15 22 August 1931 Flown in S.6B S1595.

R29 13 September 1931 Installed in S.6B, S1595, for the Schneider Trophy Contest. Aircraft flown by Flt Lt John Boothman won the Schneider Trophy aircraft.

R27 29 September 1931 Fitted in S.6B S1595 (the Trophy-winning a

ircraft), and gained the air speed record at 407.5 mph (655.8 km/h).

I made a cylinder case and a head.
Next time I will make the intake side. . . There is not enough material.

I made a cylinder case and a head.
Next time I will make the intake side. . . There is not enough material.

I added gears.
Next time I will improve the details of the exhaust system.

I am making a crankcase.
A piston and a crankshaft were temporarily arranged.