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).
Performance data table comparing a '4 Cam Pump' and a 'Standard Pump' for a Governor Control Shock Damper.
| Identifier | ExFiles\Box 151\2\ scan0067 | |
| Date | 12th April 1933 | |
| FILES X2-35 12.4.33. GOVERNOR CONTROL - SHOCK DAMPER. Hs {Lord Ernest Hives - Chair} /Les. Square Cam Operated Pump. Compressor Oil - Governor as supplied. Governor Release Pipe Disconnected. | | 4 Cam Pump. | | Std. Pump. | | |---|---|---|---|---| | Road Speed M.P.H. | Pump Press. lb/sq.in. | Delivery Pts/Hr. | Pump Press. lb/sq.in. | Delivery Pts/Hr. | | 30 | 1 | 50.8 | 1 | 22.4 | | 60 | 4½ | 83.8 | 3½ | 32.4 | | 80 | 5½ | 92.4 | 5 | 45 | | ||