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 chart showing dynamometer brake horsepower at the road wheels for a 1939 Buick Century.
| Identifier | ExFiles\Box 125\3\ scan0093 | |
| Date | 27th February 1939 | |
| 1939 BUICK CENTURY DYNO B.H.P AT ROAD WHEELS (DIRECT GEAR) B.H.P M.P.H. ENGINE R.P.M. B.H.P CORRECTED. ENGINE R.P.M. | TO 15°C | TO 50°C | H.P. REQ'D TO DRIVE DYNO. 2000 | 85.0 | 80.0 | 0.4 2500 | 99.5 | 93.5 | 0.7 3000 | 107.0 | 100.5 | 1.2 3500 | 106.5 | 100 | 2.0 3750 | 102.5 | 96 | 2.5 4000 | 97.8 | 92 | 3.2 1130 (25 M.P.H.) | 46.4 | 43.6 | 0.2 AXLE RATIO: 3.9 : 1 TYRES: 15 x 7.00 ROLLING CIRC: 88 3/4" PRESSURE: 48 lb/in² WT. AS TESTED: (ONE UP) TOTAL: 4158 lbs REAR: 1946 lbs BARO: 751 m.m 15°C AIR 50°C CORRECTED FOR DYNO LOSS 50°C AIR DYNO BY RATCLIFFE Rm{William Robotham - Chief Engineer}/TAS{T. Allan Swinden}/27. 2. 39. | ||