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).
Rear wheel size and horsepower measurements from a dynamometer test.
| Identifier | ExFiles\Box 21\4\ Scan035 | |
| Date | 19th February 1919 | |
| RR 245 a (200 T) (S.F. 163 25-10-18) G 2244 Contd. -2- EH1/LG19.2.19 Size of rear wheels 820 mm. x 120 mm. HP. taken on dynamometer. REVS HP 500 5.5 750 9.1 1000 12.3 1250 13.6 1500 16 1750 17 2000 18 2400 11 EH. | ||