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 and without an air cleaner.
| Identifier | ExFiles\Box 140\1\ scan0066 | |
| Date | 16th June 1934 | |
| SHEET 3. GRAHAM CAR SUPERCHARGER WITH CARBURETTER LESS AIR CLEANER CHARACTERISTICS WITH DRY AIR AT 3000 ENGINE R.P.M. CORRECTED TO STD BAR 29.92 STD TEMP 15°C TEST DATE: 16-6-34 ROTOR R.P.M. 17,300 ROTOR TIP SPEED 565.5 FT/SEC DELIVERY PRESSURE (''HG) EFFICIENCY HORSE - POWER TEMP RISE (°C) AIR FLOW (LBS/MIN) DEL'Y PRESS' TEMP' EFF'Y HORSE - POWER TEMP' RISE ESTIMATED WORKING POINT 1 1/2 H.P. AHG / 26-6-34 | ||