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).
Instructions for re-assembling a PH.III No.6 unit with a new crankshaft and bearings following an endurance run failure.
| Identifier | ExFiles\Box 91\1\ scan0521 | |
| Date | 7th September 1937 | |
| x To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} B0 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}4/VH.7.9.37. PH.III No.6 UNIT. Following endurance run on this unit with various types of big ends, the crankshaft has been found to be scrapped where the big ends ran out. Will you please assemble as follows:- (1) New Crankshaft, retaining existing AC.6 main bearings if O.K. for clearance with new shaft. If not fit std. W/M main bearings. (2) Big end bearing shells in Hall's metal, 3 in AC.6. and 3 in AC.2. These are thin section .070 made to Ex drawings and adaptable to existing standard bearing halves. (3) Crack test connecting rods and exhaust valves. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||