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).
Instructions for testing an OHC engine with sodium-filled valves in comparison with a B.60 engine.
| Identifier | ExFiles\Box 155\2\ scan0267 | |
| Date | 15th November 1938 | |
| -5- Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}15.11.38. NO. 2 TEST HOUSE. OHC ENGINE. Fit this unit on bed and note exhaust valve temperature with Sodium filled valves. Also try switching off in comparison with B.60 engine. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||