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).
Brake test report detailing stopping distances, pedal and toggle measurements, and noting a groaning issue from the rear brakes.
| Identifier | ExFiles\Box 47\3\ Scan050 | |
| Date | 24th April 1931 | |
| BRAKE TESTS. X4117 40% stiffer plain drums Ferodo rear perbestos front Capt. Thistlewaite. 194.GN. Cold. Foot Pedal 5 1/2". Front Toggles 1/2" OS. 3/8" NS.{Norman Scott} 7 brakes 70 - 10 MPH. 1st. Brake 305 ft. 7th. Brake 429 ft. = 124 ft Measurement on stopping Foot Pedal 5". Front Toggles 3/8" OS. 3/8" NS.{Norman Scott} Measurement after taking stopping distance Foot Pedal 6". Front Toggles 1/4" OS. 1/4" NS.{Norman Scott} Rear brakes are groaning rather badly on the final pull up when at a normal temperature. A.B.Roberts. R.Pattinson. | ||