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).
Comparative cost figure for the Phantom III tappet mechanism.
| Identifier | ExFiles\Box 96\2\ scan0288 | |
| Date | 19th May 1938 | |
| 354 BY/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 | ||