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 3000 engine RPM.
| Identifier | ExFiles\Box 140\1\ scan0068 | |
| Date | 18th June 1934 | |
| SHEET 5 GRAHAM CAR SUPERCHARGER COMPARATIVE CHARACTERISTICS WITH DRY AIR AT 3000 ENGINE R.P.M. CORRECTED TO:- STD. BAR. 29.92 STD. TEMP 15°C TEST DATE: 18-6-34 ROTOR R.P.M. 17,300 ROTOR TIP SPEED 565.5 FT/SEC DELIVERY PRESSURE ("HG) EFFICIENCY % AIR FLOW (LBS/MIN) CARBURETTER DEPRESSION ("HG.) DEL' PRESS'RS{Sir Henry Royce's Secretary} REDUCED CLEARANCE CARB' OFF STD' COMPLETE EFFICIENCIES REDUCED CLEARANCE CARB' OFF STD' COMPLETE CARB' DEPR'N TESTS:- 1. STD. COMPLETE WITH CARB' LESS AIR CLEANER 2. CARBURETTER REMOVED 3. WITH AXIAL CLEARANCE REDUCED BY .025 (CARB' OFF) 4. DERIVED CURVE OF CARB' DEPRESSION H.L. 27-6-34 | ||