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).
Status update on various B.80 engine units, detailing specific components, development instructions, and timelines.
| Identifier | ExFiles\Box 161a\3\ scan0157 | |
| Date | 5th May 1939 | |
| -5- HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}6/BA.5.5.39. B.80.No.5 contd. (c) Crankshaft Damper to BCD.1246. (d) Cylinder Head EB.4098. (e) Camshaft Ex.33975. (f) Exhaust Valves Ex.33420. (g) Induction Manifolds BCD.1298 details received 19.4.39 from D.O. necessitating new castings. AG. to get in touch with AH to urge pattern. (h) Pistons EB.3916 Aerolite. A tentative date for the completion of this unit is the end of May, and every effort must be made to keep to this date as the unit is required for fitment to 4.B.50 Chassis in connection with 15,000 miles trials. B.80.No.6. This is also a new unit instructed in HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}1/BA.31.3.39 it is similar to No.5 with the following exceptions. (a) EB.4512 Camshaft. (b) BW.2121 Pistons - Aerolite. This engine is to follow closely on the heels of No.5. B.80 Conventional. We are instructed by Rm{William Robotham - Chief Engineer} to proceed with the building up of a complete unit. Will Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} kindly let us have a complete specification. AG to see if any necessary jigs and tools will be required and go ahead. B.80.No.1. On test for general development fitted with intermediate stage of cylinder head to EX.S.1383. continued. | ||