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 return of a B.80 No.2 unit for dismantling due to high oil temperature and outlining required modifications.
| Identifier | ExFiles\Box 168\3\ img119 | |
| Date | 18th March 1939 | |
| To BP&T from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}2/MH.{M. Huckerby}18.3.39. B.80 No.2 UNIT. We are returning the above unit which is showing a very high oil temperature rise for dismantling and inspection. The same trouble occurred originally on this engine when the centre main bearing failed. Another job which we want to look into whilst the engine is stripped is that the two centre valves vary in clearance from hot to cold by .010, whereas all, the others only vary by .002. Whilst in the shop will you also carry out the following:- (1) The combustion chamber capacity varies by 4ccs, some being 120 ccs, others 124 ccs which affects the detonation characteristic. Endeavour should be made to make all chambers 124 ccs. (2) Fit double Ph.III valve springs to the inlet valves. (3) Correct distributor to be fitted if available DB.{Donald Bastow - Suspensions}2298 (DCD.1154), otherwise alter governor characteristic in accordance with the memo Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}13/MH.{M. Huckerby}22.2.39. Not available 13/3/39 MB (4) Transfer both test bed sump and torsional oscillation shaft to B.80 No.3 unit. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||