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).
Graph comparing the performance of a Super-Sports servo against a standard Phantom servo.
| Identifier | WestWitteringFiles\T\2January1929-June1929\ Scan028 | |
| Date | 11th January 1928 | |
| Super-Sports Servo Test. V536 Spg. Bal. "A" Spg. Bal. "B" VALUE OF 'B' (LBS.) VALUE OF 'A' (LBS.) STD 'PHANTOM' SERVO. CAR Nº 44 P.K. 55º CAMS. (AVERAGE TORQUE MULTN = 2.08). SUPER SPORTS SERVO. ENGINE Nº SS{S. Smith}-13. 45º CAMS. (AVERAGE TORQUE MULTN = 1.43). 11-1-28 | ||