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).
Results of brake system tests.
| Identifier | ExFiles\Box 12\5\ 05-page263 | |
| Date | 5th March 1931 | |
| L4/Hs{Lord Ernest Hives - Chair} BRAKE TESTS. 5.3.31. 22-EX. C.I. Drums (cooling ribs) Front & Rear. Ferobestos Linings .375 thick. Front. Ferodo Bonded Linings. Rear. Servo Cotton A.{Mr Adams} Linings. (1) Cold measurement front toggle levers ¾" on both. Foot Pedal from dash 5" light hand pressure. (2) After 6 medium brakings from 40.MPH. to 10.MPH. Foot Pedal 5" from dash. Front toggles Both ¾" (3) Brake Hand from 70.MPH. to 10.MPH. 6 applications. pulling up distance 200 ft. 196 ft. 213 ft. 200 ft. 269 ft. 207 ft. (4) Measurements immediately after test 3. Foot Pedal from dash 5". Front toggles both 13/16" (5) Measurements after hand braking 40.MPH. to 10.MPH. every ½ mile for 20 miles. Foot pedal 5¼" from dash. Front toggles both ¾" Measurements taken cold at Works. Foot Pedal 4¾". Front toggles 13/16" each. (6) Only on one occasion did we obtain a groan from the rear brakes with light pressure. (7) Repeat test No. 5. Foot Brake pedal 4¾". Front toggles 13/16" each. (8) No change in pulling up distance took place after heating up servo. 70.MPH. to 10.MPH. 200 ft. A.B.Roberts. R.{Sir Henry Royce} Pattinson. | ||