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).
Dynamometer test results comparing a Rolls-Royce carburettor against a Packard carburettor on a Packard car.
| Identifier | ExFiles\Box 127\1\ scan0079 | |
| Date | 6th March 1920 | |
| C.K. X.435 6.3.20. 1 X.435. PACKARD CAR. DYNAMOMETER TEST X.2Y68 R-R Carburetter. Eng.revs. Dyn.revs. lbs. HP. 500 84.375 -126 14.245 750 126.56 125 21.198 1000 168.875 114 25.79 1250 210.937 104 29.39 1500 253.125 105 35.61 1750 295.312 100 39.51 2000 337.5 94 42.51 2250 379.6875 82 41.72 2500 421.875 66 35.3 Packard Carburetter. 500 84.375 750 126.56 1000 168.875 124 28.04 1250 210.937 126 34.614 1500 253.125 123 41.7 1750 295.312 2000 337.5 103 46. 2250 379.6875 95 48.23 2500 421.875 91 51.4 | ||