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 performance of rear brakes, propeller shaft, radiator, and spare wheel carrier.
| Identifier | ExFiles\Box 108\1\ scan0198 | |
| Date | 10th September 1937 | |
| 10. Rear Brakes LOP.GN.1562 Rear Hubs LOP.GN.1491. GE.365 Aluminium Brake Drums. Brakes lined with Ferodo H.L. linings. Apart from squeaks, the rear brakes were satisfactory in every way. Propellor Shaft N.S.5024. Hardy Spicer Shaft. Lock plates fitted in place of castle nuts. There was no noticeable vibration. A clonk occurred on taking up the drive for the first time after reversing, or on reversing for the first time, but did not occur again until the torque was applied in the opposite direction. This was due to the extension shaft coupling on the rear of the 3rd. motion shaft moving on its taper, and the clonk produced being transmitted to the propellor shaft. It is important that the nuts holding this coupling as well as the propellor shaft couplings should be done up really tight so that the drive is taken by the taper and not the keys. The American type lock washers were satisfactory and the flange nuts remained tight. Radiator LOP.E2.1203 Radiator Shutters LOP.E2.1095. The cooling was good. Loss of water from the overflow pipe took place at a practically steady rate, and would continue until the circulation ceased due to shortage of water. No steam valve was fitted. The shutters were satisfactory in operation. Work on the water loss trouble is in progress. Spare Wheel Carrier LOP.DL.142. The spare wheel shake on bad roads was about the same as the last 25/30 in France. It has been complained of on the other cars in England, but is not considered serious. | ||