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).
Technical memo discussing the 4-brake system, Peregrine engine, and cooling considerations for a new model.
| Identifier | ExFiles\Box 3\4\ 04-page041 | |
| Date | 26th May 1932 guessed | |
| -3- A very great advantage in this 4 brake system is that the shoes on the rear axle can be so much wider without inconvenience. EA. has carefully gone into the multiplication, and the weight of the car, and if we have an equally strong man to drive it, we think there would be no difficulty in braking this and the Peregrine without servo action, provided we adopt Mr. Hardy's suggestion of automatic adjustment of the pedal when it gets too near the floorboards. It is now felt by many of our staff that a vacuum servo is not good, my original objection of failure by engine stoppage having been found to be a real fault. I would like to point out here that the floorboards or floor plates, especially in this sporting model, should be of metal, and well fastened down, so that we can make their position reliable. If not, our automatic adjustment, and other features, might become impossible, or dangerous. I shall be expecting to receive from E.A. a cross section of the Peregrine engine, with its damper and closer. Someone has to settle whether this model will have to have a fan. I believe Bugatti, Alfa Romeo, and a few more do not, but my own impression is that it is desirable if the drive is convenient. We have however our special valve in connection with the radiator cap for preventing loss of water by spilling. This also considerably reduces the loss of water generally, that a considerable amount of xxxxx boiling does not leave one short of water. Naturally the fan is not needed any other time than crawling down work. At any high speeds it would be objectionable. R.{Sir Henry Royce} | ||