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 graph showing carburetor depression vs. mass flow rate at various drive shaft RPMs.
| Identifier | ExFiles\Box 179b\3\ img363 | |
| Date | 6th April 1933 | |
| FIGURES ON CURVES REPRESENT DRIVE SHAFT R.P.M. GEAR RATIO - 150 : 17 TABLE: SHAFT R.P.M. | ROTOR R.P.M. | ROTOR TIP SPEED FT./SEC. 2250 | 19850 | 756 2500 | 22050 | 818 2600 | 22940 | 850.5 2750 | 24270 | 900 3000 | 26480 | 981.5 3250 | 28680 | 1063.5 3500 | 30880 | 1145 GRAPH: Y-AXIS: [ LBS PER MINUTE ] X-AXIS: RATED CARB DEPRESSION CURVES: 2250, 2500 | ||