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).
Comparative data table of various car models and their performance specifications.
| Identifier | ExFiles\Box 136\2\ scan0216 | |
| Date | 8th March 1940 guessed | |
| Sheet 2. Cont'd.{John DeLooze - Company Secretary} CAR. LITRES. WEIGHT. REAR AXLE. SPEEDS. RATIOS. GRADIENTS. TYRE SIZE. Talbot 1.185 19.5 cwt. 5.44 5.44 .666 1 in 11.2 5.25 Saloon. unladen. 8.16 .395 1 in 7.2 x Ten. 13.77 .278 1 in 4.3 16. Aug. 1937. 19.6 1 in 2.7 Flying 1.267 17.625 5.29 5.29 .690 5.00 Standard cwts. 7.68 .412 x 10 H.P. 12.84 .2535 16. March 1939. 20.86 Morris Series 1.292 21 cwts. 5.25 5.25 .654 1 in 15.4 5.50 III. Ten- unladen. 8.03 .424 1 in 9.05 x 16. four saloon. 12.4 .250 1 in 5.7 Dec. 1937. 21. 1 in 3.7 Rover 10 H.P. 1.389 25 cwt. 4.88 4.88 .671 4.75 1940 unladen. 7.27 .490 x 17. 9.95 .293 16.69 Riley Sprite 1.496 23.5 4.88 4.88 .674 1 in 10.0 5.75 12 H.P. unladen. 7.25 .436 1 in 6.0 x 16. Drophead 11.2 .252 1 in 3.9 touring saloon. 19.4 1 in 2.0 July 1939. Rover Saloon 1.496 26 cwt. 4.88 4.88 .656 1 in 14.9 5.25 x 12 H.P. unladen. 7.45 .444 1 in 9.8 17. July 1937. 11.0 .247 1 in 6.6 19.8 1 in 3.75 Singer saloon 1.525 22.8 4.88 4.88 .683 1 in 11.2 5.25 Popular twelve cwt. unladen. 7.14 .475 1 in 7.5 x 16. Sept. 1937. 10.27 .263 1 in 5.3 18.58 1 in 2.9 Wolseley 1.547 28 cwt. 5.33 5.33 .631 1 in 13 5.75 x Twelve unladen. 8.47 .392 1 in 8 16 Saloon 12.21 .225 1 in 5.7 January 1938. 21.19 1 in 3.2 | ||