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).
Specifications for the B.40 4 Cylinder and B.60 6 Cylinder C.I. engines.
| Identifier | ExFiles\Box 124\2\ scan0082 | |
| Date | 18th March 1940 | |
| To Rm.{William Robotham - Chief Engineer} c. to Ev.{Ivan Evernden - coachwork} File 1064 & 1298 EV{Ivan Evernden - coachwork}/HH.7/JH.18.3.40. SPECIFICATIONS. B.40 4 Cylinder 75 m/m Bore C.I. Engine. B.60 6 Cylinder 3 1/2 bore C.I. Engine. Please receive herewith 3 blueprints of specifications for the above engines. We have endeavoured to compile this new type specification in the manner you suggested i.e. leaving two blank columns for further design or experimental modifications. You will note that we have included four electrical sections, as we consider they must come under engine units on this type of specification. Units numbers will be put on when we have had them confirmed by Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} Ev{Ivan Evernden - coachwork}/HH. | ||