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 comparison of a Stutz car against a Phantom, including acceleration curves.
| Identifier | ExFiles\Box 23\5\ Scan054 | |
| Date | 2nd April 1926 | |
| contd :- -5- The quick loss of engine tune due to the poor method of locking the valve clearances spoils an otherwise very nice engine, as soon as tappet noises commence one is aware that the car is very low geared. PERFORMANCE. The acceleration and performance is good. The acceleration curves given for the Stutz are compared with curves obtained for 98-NK standard touring car with 15 x 52 axle in 1925 on Brooklands, the weight of the car being 2.516 tons including passengers; the Stutz as tested with two passengers weighed 2.4 tons. The curves indicate that the Stutz is superior to the Phantom at anything over 10 m.p.h. in acceleration. The maximum speed obtained from the Stutz is 75 m.p.h. by speedometer corresponding to approx. 72 m.p.h. correct speed. If account of engine size be considered the Stutz performance is very credit-able. The Stutz was taken over the standard Phantom road performance test circuit with the following results. The Phantom figures are for a car weight of 47 cwts. without passengers :- [Graph Text] Y-Axis: CAR SPEED M.P.H. X-Axis: TIME (SECS) Legend: ACCELERATION STUTZ AND PHANTOM A = PHANTOM TOP GEAR B = STUTZ " C = " 2ND " Signature: HSA / 2.4.26 | ||