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 2000 engine RPM.
| Identifier | ExFiles\Box 126\1\ scan0151 | |
| Date | 15th June 1934 | |
| SHEET 2 GRAHAM CAR SUPERCHARGER WITH CARBURETTER LESS AIR CLEANER CHARACTERISTICS WITH DRY AIR AT 2000 ENGINE R.P.M. CORRECTED TO:- STD BAR 29.92 STD TEMP 15°C TEST DATE: 15-6-34 ROTOR R.P.M. 11520 ROTOR TIP SPEED: 377.0 FT/SEC. ESTIMATED WORKING POINT 82 H.P. DEL. PRESS. TEMP. EFF'Y HORSE POWER TEMP. RISE Left Y-Axis: DELIVERY PRESSURE ("HG), EFFICIENCY % Right Y-Axis: TEMP. RISE (°C), HORSE-POWER X-Axis: AIR FLOW (LBS/MIN) Signature: A.H. 26-6-34 | ||