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 analysis of spring and chassis weights for different car makes.
| Identifier | ExFiles\Box 80\2\ scan0002 | |
| Date | 8th April 1913 | |
| X.2628 408 X.2628. X.540. X.540. X.200. AW/EH2/C8.4.13. COMPARISON OF ROLLS-ROYCE AND OTHER MAKES OF SPRINGS. lbs. per car per lb of spring. Rolls-Royce 18.0 lbs. Lanchester. 27.2 lbs. Delauney Belville. 15.8 lbs. Particulars of the cars. Rolls-Royce Lanchester. D.Belville Weight of the rear of the chassis ready for the road. 1457 1255 1458 of Weight of the front of the chassis ready for the road. 1658. 1582 1942 Weight put on to chassus to give springs normal camber, R.R 1" neg. L. flat. D.B. 1525 1803 1961 Total weight on the springs deducting unsprung weight, axles springs. 3853 3925 4219 Weight of rear axle. 500 450 637 Weight of front axle. 261 265 274 Weight of rear springs. 142 88 189 Weight of front springs. 72 56 78 Flexibility see No. 2 sheet. Contd. | ||