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).
Table of speed test results in m.p.h. for various car alterations and configurations.
| Identifier | ExFiles\Box 70\1\ scan0118 | |
| Date | 6th September 1927 guessed | |
| contd :- -5- STANDARD CONDITION OF CAR - HOOD DOWN - LOUVRED BONNET - C.O. OPEN - HIGH PRESSURES TYRES - UNDERSHIELD AND TAIL IN POSITION. Alteration from standard Speed m.p.h. condition. Full lap. Half mile. Plain bonnet - hood up. 83.99 86.54 " " - hood down. 85.57 88.24 Standard. 86.54 89.11 C.O. closed. 83.33 87.7 Undershield off. 86.09 88.67 Balloon tyres. 85.72 88.24 Tail removed. 85.6 88.24 Front wings removed. 87.53 89.55 Hs{Lord Ernest Hives - Chair}/W. A.{Mr Adams} Robotham. | ||