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).
Recommending an immediate change to the lubrication method for 20 HP valve tappets, and requesting a new design for a 3-stage relief valve.
| Identifier | ExFiles\Box 106\5\ scan0025 | |
| Date | 25th April 1928 | |
| To BY; from Hs.{Lord Ernest Hives - Chair} c. to MX{John H Maddocks - Chief Proving Officer}; c. to Wor.{Arthur Wormald - General Works Manager} X5060 Hs{Lord Ernest Hives - Chair}3/LG25.4.28. LUBRICATION OF 20 HP. VALVE TAPPETS. X5060 [crossed out] X5205 We recommend as an immediate step, we ought to adopt the method of increasing the oil to the 20 HP. tappets as suggested in MX{John H Maddocks - Chief Proving Officer}4/T2.4.28. We would of course prefer that it was similar to the Phantom. We cannot get this until we have a 3-stage relief valve for the 20 HP. We have written to E.{Mr Elliott - Chief Engineer} pointing out the difficulty and asking him to supply a design for a new relief valve for the 20 HP. as soon as possible. Hs.{Lord Ernest Hives - Chair} | ||