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).
The standardisation of road springs for the Phantom and 25 HP models, recommending American chassis springs.
| Identifier | ExFiles\Box 17\1\ Scan019 | |
| Date | 11th March 1931 | |
| To By.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} c. to Roy.{Sir Henry Royce} c. to Wor.{Arthur Wormald - General Works Manager} Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}1/MJ.11.3.31. X7410 X. 7410. X. 5410. PHANTOM & 25 HP. ROAD SPRINGS. We have now done sufficient work on suspension to be able to say that the American chassis springs will almost certainly be the future standard for the 40/50 and that low rating springs will also shortly be standard for the 25 HP. We therefore recommend that no further standard road springs shall be ordered for either chassis and when it is essential to order further springs to maintain continuity of output we shall be able to give an exact specification of the most suitable springs. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||