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).
Summary table and diagram detailing leaf spring failures and fracture locations.
| Identifier | ExFiles\Box 119\2\ scan0233 | |
| Date | 16th December 1924 guessed | |
| SUMMARY OF SPRING FAILURES. REF. NO FIELD NO POSITION OF SPRING. POSITION OF LEAF. ‡ POSITION OF FRACTURE * COMP. REBOUND RUNNING TIME THICKNESS OF LEAF. BRINELL AT FRACTURE 033 F71930 Off Top 14" to rear A 1.9" 2.4" 33 - 25 .291" 363 034 F71929 Near Top 1.75" to rear B 2.0" 2.6" 14 - 2 .290" 401 036 F70881 Off Next to Bottom 1.25" to rear D 1.6" 2.1" 20 - 20 .262" 415 Bottom 1.5" to rear C - - 26 - 7 .262" 388 Top. 16.5" to front F - - 26 - 47 .306" 388 3rd (from top) 1.75" to front E - - 26 - 47 .283" 388 037 F70880 Near Top 14.25" to rear A 1.5" 2.1" 18 - 3 .305" 415 5th (from top) 2" to rear. G - - 18 - 3 .268" 415 ‡ MEASURED FROM CENTRE BOLT. * POSITION OF FRACTURES. DIAGRAM: FRONT. REAR. Diagram shows labels A, B, C, D, E, F, G pointing to fracture locations on a leaf spring. | ||