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).
Wear measurements of brake drums, shoes, and rear axle components.
| Identifier | ExFiles\Box 72\4\ scan0223 | |
| Date | 25th September 1924 guessed | |
| (11) Brake Drums. These are approx; .004 to .006 under drg dimension of 15.000-3 and ridges have worn approx; .008 to .012 deep. Ferodo Shoes. Max; wear approx; .150 (viz: from .312 to .150). Pull Rods etc. Slight play in ball joints, otherwise in good conditon. Rear Axle. Wear in Brake Drums. Outer. Near side. Actual size 17.140 drg size 17.100+5 wear .040 Off side. 17.132 17.100+5 .032 Bad ridges have worn to an approx: depth of .040 near side and .025 off side. Inner. Slight ridges have worn Brake Shoes. Approx: min: thickness. Drg thickness. Wear. Foot Brake .100 .250 .150 Hand Brake .125 .187 .062 Otherwise condition good. | ||