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).
High-speed performance and acceleration of the Phantom and 20 HP cars compared to competitors like Vauxhall.
| Identifier | WestWitteringFiles\P\October1926-November1926\ Scan023 | |
| Date | 6th October 1926 | |
| To R.{Sir Henry Royce} from Ha/Rn.{Mr Robinson} c.c. to BJ. Wor.{Arthur Wormald - General Works Manager}✓ c.c. to RG.{Mr Rowledge}✓ E.{Mr Elliott - Chief Engineer} c.c. to DA.{Bernard Day - Chassis Design} EY. ORIGINAL. Hs{Lord Ernest Hives - Chair}/Rn{Mr Robinson}4/LG6.10.26. HIGH SPEED PERFORMANCE. X3542 4469.? We are continually having the wonderful speeds and accelerations of various cars quoted against the Phantom. We have always been under the impression that the claims by other people were somewhat exaggerated. Recently Mr. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Summers conducted a private test in which a number of cars were accurately timed over the flying half-mile and standing mile. We think the attached figures may be of interest. All the Vauxhalls were the latest overhead valve type which were agreed by everyone present to be the fastest sports car at the moment being sold by a British manufacturer in any quantity. It will be observed that while the speed of the Phantom over the flying half mile is very good, its acceleration is only moderate over the standing half mile in which event it was beaten by the other cars. We are continually receiving reports that the hill climbing and acceleration of the covered 20 HP. car is markedly inferior to the best Continental and American cars. Attached is a comparison of several cars, the weights being taken from The Motor and Autocar tests. A lot of foreign cars are being supplied with Weymann bodies which of course give marked weight reduction. The American covered bodies being [heavily struck through] contd :- | ||