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).
The failures observed during a bump test of an EAC.11 chassis.
| Identifier | WestWitteringFiles\M\2Jan1925-March1925\ Scan0 | |
| Date | 1st January 1925 | |
| R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. Hs{Lord Ernest Hives - Chair}/RS{Sir Henry Royce's Secretary}/LG. REF: 1.1.25 BUMP TEST OF EAC.11. CHASSIS. New frame fitted since last test. Specification of chassis. Frame. As previously but with boxed in dumb irons - chassis otherwise as previous report. SUMMARY OF IMPORTANT FAILURES (excluding road springs) FROM 138 TO 181 HOURS. | hrs. mins. running time. | Piece No. | Position on chassis. | DESCRIPTION. | |---|---|---|---| | 146 10 | E.71430/1 | Off | Front engine tube. | | 72 15 | G.2903 | Nr. | Diagonal stay of sphere anchorage, at rear end. | | 72 15 | G.2903 | Off | Diagonal stay of sphere anchorage, at front end. | | 72 15 | F.2888 | Off | Flange cracked, 4th. cross member. | | 72 15 | F.2725 | Nr. | Flange cracked, 3rd. cross member. | | 24 25 | F.71712 | | Rad. top stay broken at rear end. | | 155 15 | | | Radiator suspension showing signs of wear and shutter rattle worse. | | 76 45 | F.71965 | Nr. | Inside leg of rear spring clip broken. | | 95 40 | F.2888 | Nr. | 4th. cross member completely severed. | | 97 5 | | Nr. | Frame cracked, commenced at bottom hole in front of front cross member | | 97 5 | F.1323 | Nr. | Flange of 5th. cross member cracked | | 89 0 | | Off. | Radius rod slack at rear end - adjusted. | Cross members numbered from front. contd :- | ||