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).
Letter to the Dunlop Rubber Co. Ltd. providing the unsprung and sprung weights for the front and rear axles of a 40/50 complete car.
| Identifier | ExFiles\Box 49\2\ Scan088 | |
| Date | 30th May 1922 | |
| X3457 Hs{Lord Ernest Hives - Chair}2/T. x 200 30th May, 1922. The Dunlop Rubber Co. Ltd., Aston Cross, Birmingham. Dear Sirs, With reference to your telephone message received yesterday, asking for the ratio of unsprung weigh of front and rear 40/50 chassis compared with the sprung weight, the following are the particulars which we hope will give you the information you need :- Weights of 40/50 R.R. Complete Cars. | | Front axle. | Rear Axle. | |---|---|---| | Unsprung weight (lbs). | 330 | 670 | | Sprung weight (lbs). | 1850 to 2400. | 1570 to 2690 | | Total (lbs) | 2180 to 2730. | 2240 to 3360 | We should be pleased to let you have any further information if you require it. Yours faithfully, For ROLLS ROYCE LIMITED. | ||