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).
Engine component design including induction, wiring, valves, and oil sealing.
| Identifier | ExFiles\Box 65a\2\ scan0004 | |
| Date | 6th July 1928 guessed | |
| 4 (20) Lengthy induction system with right angle bends which from our experience very poor for top power. (21) Conduit for high tension wires in V raised away from crankcase on pedestal. Conduit has diameter sufficient to house twice as many wires, hence no cramping & plenty of air space for cooling. (22) Heavy valves, same dia stems as RR but 6.25" long against RR4.500" (23) Features with regard to preventing oil getting down the stems. as reported including, raised guide cylinder & felt round valve stems. Rm{William Robotham - Chief Engineer} / SWDL.{Len H. Swindell} | ||