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).
Comparison of ribbed and plain sumps under varying oil pressures and flow conditions against road speed.
| Identifier | ExFiles\Box 179b\3\ img327 | |
| Date | 14th March 1933 guessed | |
| INE. DE 30°C. Hs{Lord Ernest Hives - Chair} 354. COMPARISON OF VARYING OIL PRESSURE RIBBED SUMP. OIL SPRAYED ON BOTTOM HALF. ② 50LBS/D'' 20LBS/D'' ROAD SPEED M.P.H. 60 65 70 ④ 50LBS/D'' PLAIN SUMP NO TURBULENCE 20LBS/D'' RIBBED SUMP TURBULENT FLOW RAD SHUTTERS FULLY OPEN ROAD SPEED M.P.H. 60 65 70 | ||