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 at 1000 engine RPM.
| Identifier | ExFiles\Box 126\1\ scan0150 | |
| Date | 15th June 1934 | |
| SHEET 1 GRAHAM CAR SUPERCHARGER WITH CARBURETTER LESS AIR CLEANER CHARACTERISTICS WITH DRY AIR AT 1000 ENGINE R.P.M. CORRECTED TO: STD BAR: 29.92 STD TEMP: 15°C TEST DATE: 15-6-34 ROTOR R.P.M. 5760 ROTOR TIP SPEED 188.3 FT/SEC DELIVERY PRESSURE ("HG) EFFICIENCY AIR FLOW (LBS/MIN) HORSE - POWER TEMP. RISE (°C.) Graph Lines: DEL' PRESS TEMP' EFF'Y HORSE - POWER TEMP' RISE ESTIMATED 4BHP WORKING POINT Signature: AA{D. Abbot-Anderson} 26-6-34 | ||