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 sets of modified relief valves and caps for a 'Spectre' model to resolve a valve chatter issue.
| Identifier | ExFiles\Box 91\3\ scan0111 | |
| Date | 26th September 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} x 309a (3) Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}3/KW.26.9.35. SpectreCodename for Phantom III. Will you please make two sets of modified relief valves and caps, one set for use on No.10 unit in No.2 chassis. These are urgently required, as they complain of valve chatter on this car. The two sets consist of - 6. Valves to Hs.{Lord Ernest Hives - Chair}2153. 4. Caps to Hs.{Lord Ernest Hives - Chair}2155. 2. Caps to Hs.{Lord Ernest Hives - Chair}2154. The relief valve springs do not have the end coil reduced in diameter, and otherwise are to E.86850 and E.86806. HS{Lord Ernest Hives - Chair}/L.H.Swindell. | ||