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 determine the amount of slum formed in different oils used in Spectre silent tappets.
| Identifier | ExFiles\Box 96\2\ scan0052 | |
| Date | 3rd September 1935 | |
| x 354 To Hl. Hs{Lord Ernest Hives - Chair}/Smth.15/KW.3.9.35. We are interested in the rate of formation of slum in the hydraulic units of SpectreCodename for Phantom III silent tappets. Will you please determine for us the amount of slum formed in Motorine 'C', Castrol XL, and P.4, when heated for 100 hours at 90°C. in the absence of air. Hs{Lord Ernest Hives - Chair}/Smth. | ||