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 failures during a 7,000 miles test for chassis 9-G-111, carried out from 8th to 30th August 1925.
| Identifier | Morton\M2.6\ img035 | |
| Date | 30th August 1925 | |
| CHASSIS 9-G-111. SUMMARY OF FAILURES DURING 7,000 MILES TEST CARRIED OUT FROM 8.8.25 to 30.8.25 Tested at. | Total Miles run. | Test Miles | Remarks. --- | --- | --- | --- Chateauroux. | 12502 | 2502 | F.51863 side steering tube spring broke. " | 12807 | 2807 | Failure of two bolts in slipper wheel, damaging cam wheel. " | 4807 | 4807 | 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. " | 5250 | 5250 | O.S.F. wing stay (front). Broke 3" from outside end. " | 5750 | | O.S.F. wing stay (second) broke where bolted to frame across top bolt holes. " | 16004 | | Bonnet support on radiator broke. N.S.R. spring broke - top and 4th. leaves broke 9" from centre bolt, from end, and 3 1/4" from front end, respectively. New F.51908 - 900 lbs. fitted. Flange on exhaust pipe, making joint to exhaust box, broken off half way round. " | 16254 | | Exhaust box cracked right round near nos. 5 and 6 port. G.W.Hancock. | ||