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 characteristics graph for a Graham car supercharger with carburetter less air cleaner at 3500 engine RPM.
| Identifier | ExFiles\Box 140\1\ scan0067 | |
| Date | 18th June 1934 | |
| SHEET 4 GRAHAM CAR SUPERCHARGER WITH CARBURETTER LESS AIR CLEANER CHARACTERISTICS WITH DRY AIR AT 3500 ENGINE R.P.M. CORRECTED TO STD BAR 29.92 STD TEMP 15°C TEST DATE: 18-6-34 ROTOR R.P.M. 20,200 ROTOR TIP SPEED: 660.5 FT/SEC. DELIVERY PRESSURE ("HG) EFFICIENCY AIR FLOW (LBS/MIN) ESTIMATED WORKING POINT 128 H.P. HORSE-POWER TEMP. RISE (°C) | ||