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).
Bump test of the EAC 11 chassis, summarizing important failures.
| Identifier | ExFiles\Box 119\2\ scan0236 | |
| Date | 25th September 1924 | |
| R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs{Lord Ernest Hives - Chair}/RB{R. Bowen}/LG1.1.25. BUMP TEST OF EAC 11. CHASSIS+ New frame fitted since last test. Specification of chassis. Frame. As previously but with boxed in dumb iron - chassis otherwise as previous report. SUMMARY OF IMPORTANT FAILURES (excluding road springs) FROM 138 TO 181 HOURS. Running time. hrs.mins. | 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 | Ditto - at front end. 72 15 | F.2888 | Off | Flange cracked - 4th. cross member. 72 15 | F.2725 | Nr. | " " - 3rd. " " 24 25 | F.71712 | Nr. | Rad.top stay broken at rear end. 155 15 | | | Radiator suspension showing signs of wear and shutters rattle badly. 76* 45 | F.71965 | Nr. | Inside leg of rear spring clip broken. 95 40 | F.2888 | Nr. | 4th. cross member completely severed. 97 5 | F.{Mr Friese} | 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 :- | ||