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).
The updated assembly specification for the B.80 No.1 Unit engine.
| Identifier | ExFiles\Box 123\5\ scan0231 | |
| Date | 12th December 1938 | |
| 1044. To HPS.{Horace Percy Smith - Experimental Factory Mgr} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}11/JH.12.12.38. B.80 No.1 Unit. In view of the experience gained since we instructed for the B.80 engines the assembly specification of the above unit should be as follows - (1) Vandervell main bearings. (2) Sodium filled exhaust valves. (3) Inlet valve springs and guides (Ph.III parts) as instructed in our memos. for B.60 (Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}7/JH.8.12.38 and Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}9.12.38.) (4) Cylinder head modified in transfer throat to PD.292. (5) Crank damper to be modified in accordance with By/Ald.{F. Allwood - Experimental Design}9/G.8.12.38. (6) Gear box to be fitted in accordance with memo. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}3/MH.{M. Huckerby}1.12.38. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||