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).
Spectre camshaft design, comparing it with Cadillac, Bentley and 20/25 camshafts.
| Identifier | ExFiles\Box 93\5\ scan0010 | |
| Date | 3rd October 1934 | |
| 460H# 307 To E.{Mr Elliott - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}13/KW.3.10.34. SpectreCodename for Phantom III Camshaft Design. We attach curves Hs.{Lord Ernest Hives - Chair}1523, showing a comparison of the Cadillac, Bentley, 20/25 and SpectreCodename for Phantom III new and old type camshafts. The latest SpectreCodename for Phantom III camshaft agrees closely with the Cadillac figures with regard to overlap. We are urging the short duration camshaft. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||