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).
Design position status report for the P.V.XII engine and single cylinder research projects.
| Identifier | ExFiles\Box 30\4\ Scan312 | |
| Date | 4th October 1934 guessed | |
| - 8 - ITEM DESIGN POSITION. -------------------------------------------------------------------------------- P.V.XII ENGINE WITH RAMP CYL: HEAD. ----------------------------------- Inlet and exhaust rockers. Completed. Rear end of crankcase showing cylinder water inlet. Completed. Crankcase and cylinder integral casting. Completed. Cylinder head. In hand. Camshaft and rocker mechanism. In hand. Induction pipe and priming pipes. In hand. Camshaft drives. In hand. SINGLE CYLINDER AND GENERAL RESEARCH. ------------------------------------- 5" x 5½" Single cyl.sleeve valve engine - 1/2 scale arrangement and piping. Completed. Swirl meter for sleeve valve cyl. head. In hand High power head (2 inlet and 1 exhaust valve) 3½"x 4½" single cylinder unit. Completed. Investigation of wobble shaft sleeve drive. Put aside. Investigation of hypoid bevel sleeve drive. Put aside. | ||