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).
Requesting a further set of 25 HP valve springs with revised specifications to achieve the required load.
| Identifier | ExFiles\Box 56\2\ Scan114 | |
| Date | 19th January 1932 | |
| RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} X290 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}1/MA.19. 1. 32. 25 HP. VALVE SPRINGS. Will you please make a further set of valve springs to Hs.{Lord Ernest Hives - Chair}477. The first set were under the required load. We should like this set to give 86 lbs at 1.100 by a small increase in free length. Will you then please fit them to the 2.250 Journal J.I. engine in conjunction with tappet springs to Hs.{Lord Ernest Hives - Chair}500. Hs{Lord Ernest Hives - Chair}/H.Grylls. | ||