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).
Telegram from Royce with instructions for steering modifications and tests.
| Identifier | ExFiles\Box 67\3\ scan0154 | |
| Date | 1st July 1925 | |
| Hives Roycar Derby. Regarding steering fit 10% longer pendulum lever namely 10 1/2 inches reduce lead of worm from 1.125 to 9 test with simpler buffer springs report on self aligning nett and damper lever further instructions by post. Royce. | ||