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).
Instructing the use of backed off cams, successful on the Wraith model, for the Bentley 50 C.I. engine.
| Identifier | ExFiles\Box 111\2\ scan0364 | |
| Date | 31th May 1938 | |
| File DV/NO [Strikethrough] 500 c. Rm.{William Robotham - Chief Engineer} DA.{Bernard Day - Chassis Design}17/G.31.5.38. B.50. C.I. ENGINE. Please receive PD.191 shewing the backed off cams, which gave good results as regards turning vertical tappets on Wraith. It is desired to instruct this for Bentley 50 C.I. engine. DA.{Bernard Day - Chassis Design} | ||