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).
Log sheet detailing failures found during a running test on a 40/50 chassis.
| Identifier | Morton\M1.6\ img034 | |
| Date | 18th January 1925 guessed | |
| 40/50 CHASSIS. Running Test on Rear of Chassis. Total hours Remarks. 30 hours. Bolt fixing stay for centre bracket for cantilever spring broken. 42 * Stay broken on centre bracket of rear spring. 53 * Rear spring second leaf broken O.S. 87 * Flange on cross member at centre bearing broken. 89 * Rear spring 3rd. and 4th. leaves broken N.S. 100 * O.K. | ||