Instructions for modifications to Phantom Unit No. 28 for a 10,000-mile test.
| Identifier | ExFiles\Box 11\5\ 05-page143 | |
| Date | 9th July 1934 | |
| To RHC. {R. H. Coverley - Production Engineer} X7941 Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 3/KW.9.7.34. Phantom Unit No. 28 for the 10,000 miles Test. Will you please carry out the following modifications to this unit :- (1) Replace the camshaft and bottom tappets. (2) Fit the latest type pistons. (3) Camshaft to E.80070 with a new No. 4 inlet cam profile as instructed in Hs {Lord Ernest Hives - Chair} /Smth.11/KW25.6.34 if this is available. Otherwise a camshaft as instructed in Hs {Lord Ernest Hives - Chair} /Smth.4/KW.4.6.34. The real number of the camshaft is HR.90 as it has a balancing cam. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).