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 of faults recorded during a 7,000-mile test on Chassis 9 G.III.
| Identifier | ExFiles\Box 4\9\ 09-page125 | |
| Date | 30th August 1925 | |
| Chassis 9 G.III. Y5840 Failures Summary of faults during 7,000 miles test, carried out from 8.8.25 to 30.8.25. Tested at. | Miles run. | Total miles. | Remarks. Chateauroux. | 12,502 | 2,502 | F.51863 side steering tube spring broke. " | 12,807 | 2,807 | Failure of two bolts in slipper wheel, damaging cam wheel. " | 4,807 | 4,807 | N.S.F. spring - second leaf from bottom - broke 7/8" rear of centre bolt. New F.53585 - 650 lbs. spring fitted. Supporting rod to top of radiator broke, at dashboard end. " | 5,250 | 5,250 | O.S.F. wing stay (front.) broke 3" from outside end. " | 5,750 | 5,750 | O.S.F. wing stay (second.) broke where bolted to frame across top bolt holes. " | 16,004 | 16,004 | Bonnet support on radiator broke. N.S.R. spring broke - top & 4th leaves broke 9" from centre bolt, front end, and 3 1/2" from front end, respectively. New F.51908 - 900 lbs. fitted. Flange on exhaust pipe, making joint to exhaust box, broken off 1/2 way round. " | 16,254 | 6,254 | Exhaust box cracked right round near Nos. 5 & 6 port. LEAWG (signature) | ||