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).
Graph showing the static deflection of standard C Series brake drums under various loads.
| Identifier | ExFiles\Box 84\2\ scan0296 | |
| Date | 5th February 1935 guessed | |
| STATIC DEFLECTION OF BRAKE DRUMS STANDARD DRUM (C SERIES) STANDARD SHOES DEFLECTION OF DRUM = 8 / (16 5/8) x CLOCK READINGS BELOW LENGTH OF LEVER = 18 7/8" MAX NORMAL LOAD = 56 LBS. LAST EXTERNAL LEVER = 3.5" OUTWARDS INWARDS MICROMETER CLOCK READINGS - THOUSANDTHS OF AN INCH. LOAD - LBS. WT. A B C D D C B A 4 THOU' TOO MUCH 1 | ||