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).
Polar diagram illustrating the inertia loadings on the PH.III main bearings at 4500 RPM.
| Identifier | ExFiles\Box 115\1\ scan0349 | |
| Date | 23th April 1937 guessed | |
| INERTIA LOADINGS ONLY AT 4500 R.P.M. SEE R.M. 376 FOR BIG END LOADINGS. PH.III MAIN BEARING LOADINGS. ANGULAR POSITION OF LEADING CRANK FROM ¢. OF A BANK CENTRE BRG. LOADS. MAX. VALVE 910 LBS / □'' INTERMEDIATE BRG. LOADS, MAX. VALVE 2100 LBS. / □'' lbs./□'' 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 TDC BDC RM.{William Robotham - Chief Engineer} 377. | ||