Comparative cost figure for the Phantom III tappet mechanism.
| Identifier | ExFiles\Box 96\2\ scan0288 | |
| Date | 19th May 1938 | |
| 354 BY {R.W. Bailey - Chief Engineer} /NS. {Norman Scott} c. Rm. {William Robotham - Chief Engineer} File Da. {Bernard Day - Chassis Design} 7/G.19.5.38. SWDL {Len H. Swindell} PHANTOM III - TAPPET MECHANISM. Attached is a copy of RHC {R. H. Coverley - Production Engineer} /CAN.1/LS.17.5.38. being a reply to our request for a comparative cost figure against the cheapened broached type of tappet now on 39-EX. E.CD.635 is, of course, the Wraith type of tappet on Phantom lll. DA. {Bernard Day - Chassis Design} on | ||
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).