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).
Test report and specifications for a Buick Car.
| Identifier | ExFiles\Box 124\3\ scan0098 | |
| Date | 15th December 1920 | |
| X.3317 15.12.20 X 3317. Buick Car. Weight complete with 4-seater open touring body - hood windscreen, 1 spare wheel at back - full of oil and water. Buick Detachable rims, wood spokes with steel rim 33 x 4". Weight front 13 cwts. 0 qrs. rear 15 " 3 " 1 ton 8 cwt. 3 qrs. Capacity of water system 4 galls. " " petrol bank. 12 " " " engine base for oil. 2 1/2 " Gear ratios Top direct 4.16 to 1. 2nd 7.36 to 1. 1st 13.22 to 1. Reverse 17.5 to 1. 1000 Engine revs. - 24 M.P.H. Petrol consumption on road - average M.P.G 21. Dynamometer Test Revs. | Dyn.Revs. | Petrol. P.P.H. | lbs. lifted. | HP. ------|----------|------------------|--------------|------- 500 | 356 | | 32 | 10.43 750 | 534 | | 82 | 15.6 1000 | 712 | 20 | 83 | 21.2 1250 | 890 | 25 | 80 | 25.4 1500 | 1068 | 28 | 75 | 28.6 1750 | 1246 | 29 | 68 | 30.2 2000 | 1424 | 31 | 55 | 27.9 Clutch. Fairly easy changing - no jingling of plates - rather fierce - squeaks badly. Brakes. Foot brake jaggers at times - fairly good. Side Brake poor. Distance to pull up with clutch out and brake hard on - FootBrake. Side Brake. 20 M.P.H. 57 feet. 62 ft. 30 " 123 " 154 " 40 " 126 " 242 " | ||