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).
The high-speed performance testing of two Continental Phantom II cars at Brooklands Track.
| Identifier | ExFiles\Box 179b\3\ img291 | |
| Date | 3rd March 1933 | |
| R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} c. Sg.{Arthur F. Sidgreaves - MD} WOr.{Arthur Wormald - General Works Manager} c. E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} c. Hy.{Tom Haldenby - Plant Engineer} Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey}1/KT.3.3.33. 8718 X7/20 CONTINENTAL PHANTOM - HIGH SPEED PERFORMANCE. We have had an opportunity of testing two production Phantom II cars on Brooklands Track. The cars were - (1) 46-MY, which is a pre semi-expanding carburetter type standard car. (2) 20-MY, the latest Continental Phantom II with semi expanding carburetter. The following lap speeds were obtained - 20-MY - Cut out open (2 up) 86.62 M.P.H. 46-MY - No cut out fitted (2 up) 74.33 M.P.H. We do not know the weights of these two cars but we should imagine that there is little difference between the two. The windage is approximately the same in each case, being rather similar types of body. The lap speeds obtained are what we should expect and the difference between the two is representative of the difference to be expected between the two types of chassis. We obtained a value for the difference in lap speed due to cut out open and closed on 20-MY, the figures are as follows - Cut out open - 85.72 M.P.H. Cut out closed - 81.9 M.P.H. The best half-mile and mile speeds obtained with 20-MY (cut out open) were Flying half-mile - 90 M.P.H. Flying mile - 88.67 M.P.H. Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} | ||