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).
Configuration and results of brake tests.
| Identifier | ExFiles\Box 12\5\ 05-page295 | |
| Date | 29th May 1931 | |
| Hs{Lord Ernest Hives - Chair} 87360 BRAKE TESTS. 22-EX. Standard drums on front. Standard drums on rear fitted with sentinels, melting point 418°C. Ferodo linings all round. Plain shoes on front with lead weights. Plain shoes on rear. Cotton duck servo. Increased leverage to F.W.B. G.W.H. spring applied hand brake. Warm. Foot Pedal 5¼" Front Toggles ¾" O.S. 1" N.S. Stopping distance. 30 MPH........... 18 ft. 70 " ........... 224 ft. 60 " ........... 153 ft. 50 " ........... 102 ft. 40 " ........... 62 ft. 30 " ........... 32 ft. 24 brakes from 70 - 10. Made up as follows 6 brakes 70 - 10 and then examine sentinels, then examine after every 3 brakes. At the completion of the 24 brakes the sentinels had not melted. A.B.Roberts. R.Pattinson. | ||