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).
New pattern required for the rationalised six-cylinder engine crank-case.
| Identifier | ExFiles\Box 146\4\ scan0072 | |
| Date | 28th March 1940 | |
| 1246 f 1117 To HPS.{Horace Percy Smith - Experimental Factory Mgr} c.c. to RPS/RH.{R. Hollingworth} Rm{William Robotham - Chief Engineer}/OT.6/JH.28.3.40. Chassis Division Six Cylinder Engine. Will you please note, that a new pattern is now required to produce the rationalised six cylinder crank-case. This should be constructed so that four different cylinder bore dimensions can be produced at lll, from the one set of patterns and core boxes. The latest drawings are as follows :- RR.269 C'Case and cylinders (79 m/m). RR.108 " " " (3.25" ). RR.693 " " " (3.50" ). RR.138 " " " (3.75" ). The above were issued in our memo. Rm{William Robotham - Chief Engineer}/OT.6/JH.27.3.40. Rm{William Robotham - Chief Engineer}/OTS. | ||