Specification for the construction of a new supercharged unit B-14.
| Identifier | ExFiles\Box 140\1\ scan0143 | |
| Date | 4th March 1935 | |
| To RHC. {R. H. Coverley - Production Engineer} +209 Hs {Lord Ernest Hives - Chair} /Smth.3/KW.4.3.35. New Supercharged Unit B-14. The specification to which this unit should be built is as follows :- Crankcase with 1.250/1 dynamo drive. Standard Bentley cylinder head 6.4/1 compression ratio. Narrow pin crankshaft EX.14081. Connecting rods EX.16046. Aerolite pistons. 20/25 Camshaft E.59699 adapted to Arrgt. EX.14087, timed as under :- I.O. 4.5°E. {Mr Elliott - Chief Engineer} E.O. 54.6°E. {Mr Elliott - Chief Engineer} I.C. 33.6°L. E.C. 1° E. {Mr Elliott - Chief Engineer} Supercharger mounted on near side as on B-12. Supercharger drive - American gears 4.84/1 to be fitted if they arrive in time; if not fit D.B.S. gears 4.34/1 ratio. Hardy couplings in supercharger drive shaft. Supercharger casing stayed to cyl. head as on B-12. Short induction pipe, sloping downwards from supercharger and water-jacketed as on B-12. Zenith 48 m.m. carburetter. Air silencer to Hs. {Lord Ernest Hives - Chair} 1778. Modify the end of the supercharger drive shaft to take the rev. counter drive. Clutch & flywheel - existing standard. Hs {Lord Ernest Hives - Chair} /Smth. | ||
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).