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 new engine units B.80 No.5, No.6, and No.7, detailing required components.
| Identifier | ExFiles\Box 161a\3\ scan0207 | |
| Date | 12th June 1939 | |
| -5- HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}2/BA.12.6.39. Remarks. To be completed as quickly as possible by using the Crankshaft, Camshafts etc from B.80. No.4 Unit, as instructed in HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}8/BA.7.6.39. B.80.No.5. New Unit required for 30.C.VII in connection with 30,000 miles trials. B.80.No.6. New Unit in accordance with specification issued in HPS{Horace Percy Smith - Experimental Factory Mgr}/WSC.{W. S. Cassel}1/BA.31.3.39. The main items consisting of, 1 EB.4670 Crankcase T.H. & Cylinders to suit 2.750 dia journals. 2. EB.4575 Crankshaft, with nose end to EB.4104 to suit original harmonic damper. 3. EW.2121 Split skirt pistons. 4. EB.4098 Cylinder Head. 5. EB.4512 Camshaft. 6. Ex.33420 Solid stem exhaust Valves. 7. EB.4835 Induction pipe to ECD.1298. 8. EB.4291/2 Exhaust Manifolds. 9. Rm.{William Robotham - Chief Engineer}576 Flywheel. 10. R.R.Ignition Distributor. B.80.No.7 Unit. New Unit which will be required for the Silver Dawn 30 Chassis No.33.C.VII. The following are the main items. 1. EB.4670 Crankcase T.H. and Cylinder. 2. EB.4575 Crankshaft, nose end to EB.4101. 3. EB.3916 Standard Aerolite pistons with tin plated rings as B.V. production. 4. EB.4098 Cylinder Head. continued. | ||