Performance test results for an Isotta Fraschini 8-cylinder car, including horsepower, braking, and acceleration.
| Identifier | ExFiles\Box 22\2\ Scan028 | |
| Date | 7th November 1923 | |
| ISOTTA FRASCHINI. 8 CYL. 85 x 130. 5881 C.C's. WEIGHT FOR TEST (3 PASSENGERS) = 2.432 TONS. OPEN TOURING BODY. 1000 R.P.M. = 26.7 M.P.H. Graph 1: ROAD WHEEL HORSE POWER Axis: HORSE POWER vs {J. Vickers} M.P.H. and R.P.M. Graph 2: HOOD UP. TRACTIVE RESISTANCE LBS/TON. Axis: LBS. PER TON vs {J. Vickers} M.P.H. Graph 3: ACCELERATION Axis: FT. PER SEC. PER SEC. vs {J. Vickers} M.P.H. Data on graph: 11.65, 6.55, 3.77 BRAKING CAPABILITIES FRONT BRAKES ONLY. 20 M.P.H. 52 FT. 30 M.P.H. 127.5 FT. 40 M.P.H. 272 FT. ALL FOUR BRAKES. 20 M.P.H. 35.25 FT. 30 M.P.H. 75.0 FT. 40 M.P.H. 148 FT. REAR BRAKES ONLY 20 M.P.H. 44 FT. 30 M.P.H. 99 FT. 40 M.P.H. 189 FT. G II FOOT BRAKES 37.1 FT 97 FT 170 FT PETROL CONSUMPTION 16.35 M.P.G. AT 30 M.P.H. TURNING CIRCLE LEFT LOCK 50FT 10" RIGHT LOCK 51FT 2" | ||
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).