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).
Modifications to fan draught, matrix size, and front spring stiffness due to front-wheel brakes.
| Identifier | WestWitteringFiles\K\October1923\ Scan141 | |
| Date | 19th October 1923 guessed | |
| (2) advantageous to the fan draught, and the required extra area will be obtained by making it about higher inches in the matrix. Drawing shewing all this will be sent in a few days. You will remember that with front wheel brakes we are forced to usemuch stiffer front springs i.e. about 50%. R.{Sir Henry Royce} | ||