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).
Component failures due to vibration, covering spring clips, dashbrackets, and radiator springs.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan26 | |
| Date | 25th September 1924 | |
| R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -4- Expl. No. REF Hs{Lord Ernest Hives - Chair}/LS/LG3.7.25. C there is slight vibration, bolts invariably breaking across waisted portions. hrs. mins. Front spring clip of front O.S. spring broken after 51 30 " " " " N.S. " " 84 30 Rear " " " " N.S. " " 105 0 'D' type DASHBRACKET. hrs. mins. N.S. dashbrkt. cracked after 36 10 O.S. " " 51 20 N.S. " " 47 5 O.S. " " 50 25 The radiator down springs appears to give a little too much movement of radiator - 12 springs broken during test and 4 new springs guides and washers fitted. ***************** contd :- | ||