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).
10,000-mile test log for a Landaulet 9.P.K. with stiffer front road springs.
| Identifier | ExFiles\Box 42\3\ Scan162 | |
| Date | 6th October 1924 guessed | |
| X3854 10,000 MILES TEST ON WOODHEADS 20% STIFFER FRONT ROAD SPRINGS. Landaulet 9.P.K. Chateauroux. FRANCE. weight of car:- 2ton 7cwt 1qr. in running order. DATE Days Total Days Total Days Total Days Total miles miles Average Average m.p.g. m.p.g. m.p.g. m.p.g. Speed. Speed. Petrol. Petrol. Oil. Oil. Oct 7. 87 87 34.8 34.8 11.6 11.6 --- --- Oct 8. 200 287 36.4 35.83 11.1 11.25 765 765 Oct 8. 346 633 34.9 35.4 12.07 11.75 692 723 Oct 9 508 1141 39.4 37.0 11.35 11.6 677 700 Oct 10 525 1666 37.25 37.2 11.3 11.5 420 580 Oct 11 503 2169 37.25 37.2 11.3 11.5 2012 695 Oct 12 527 2696 36.4 37.0 11.51 11.5 2108 800 Oct 13 501 3197 40.0 37.5 11.4 11.5 2004 880 Oct 14 507 3704 37.25 37.3 11.7 11.6 2028 950 Oct 15 524 4228 35.25 37.25 11.0 11.5 1400 1040 Oct 16 175 4503 35.0 37.0 11.4 11.5 --- 1055 Oct 17 456 4859 36.5 37.0 10.9 11.5 1220 1055 Oct 18 523 5382 39.4 37.2 10.8 11.4 2092 1100 Oct 19 501 5883 37.0 37.1 11.3 11.4 2004 1140 Oct 20 505 6388 38.0 37.25 11.35 11.4 2020 1190 Oct 21 532 6920 37.0 37.2 11.6 11.4 2128 1230 Oct 22 256 7176 36.6 37.2 11.45 11.4 --- 1280 Oct 23 395 7571 36.7 37.2 11.1 11.4 3152 1320 Oct 24 442 8013 35.4 36.75 12.6 11.41 355 1140 Oct 25 464 8477 34.4 35.9 12.65 11.5 928 1127 Oct 26 508 8985 34.0 36.5 12.6 11.5 675 1090 Oct 27 399 9384 29.6 34.5 12.45 11.6 456 1030 Engine oil:- PRICES WINTER HUILE DE LUXE. | ||