From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Request to manufacture two modified camshafts to test increased power output.
| Identifier | ExFiles\Box 13\2\ 02-page117 | |
| Date | 21th July 1931 | |
| To RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}2/MJ.21.7.31. 7090 P.11 Increased Power Output. We wish to try the accompanying camshaft in conjunction with masked valves and high lift rockers. Will you please therefore make a camshaft to Hs.{Lord Ernest Hives - Chair}414. The masked seats to Hs.{Lord Ernest Hives - Chair}415 can be machined from the standard seat E.77398 as shown in the drawing. Will you also make a further camshaft to Hs.{Lord Ernest Hives - Chair}414 but with the angle between the cams reduced to 108°. Hs{Lord Ernest Hives - Chair}/H.Grylls. | ||