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).
Component failures, modifications, and performance at specific mileages.
| Identifier | ExFiles\Box 101\2\ scan0224 | |
| Date | 1st January 1937 | |
| -5- Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/HFH{Hoppy F. Hamilton}4/R.1.1.37. The O.S.R. link failed to receive lubrication at 34,276 miles, due to the bijur pipe having been flattened out by stones. This was replaced but only lasted a further 250 miles when the same thing happened. We have however had no more trouble in this respect. At 39,815 miles the compression spring in the O.S.R. damper link was found to have broken into four pieces, and was replaced. The governor control supply pipe to the dampers broke off at the base of the union at 36,126 miles. It appeared that the union had compressed the olive to the extent that the piping had become reduced in size and consequently become weak. This was refitted and gave no further trouble. BRAKES. Fronts. LOP. G.56807. Rears. LOP. G.56534. The front brakes were relieved at a mileage of 31,233. Bijur lubrication was fitted to the bearings of the rear brake actuating shafts at 32,832 miles. A 2.T.O. bijur leak was used and found to give a sufficient supply for ordinary running. It was found that the brake thumb adjustments invariably became stiff and impossible to turn by hand, during the time when they were not touched. The sticking was attributed to mud and water accumulating in the cam bearings and, consequently, washing away any vestige of lubrication. A gaiter, or some protection, would be of assistance to overcome this trouble. The brakes otherwise gave no trouble and maintained their effectiveness throughout their running mileage. Rear Springs - LOP. F.39702 F.58137. New low-rated front springs were fitted in conjunction with a front roll-bar with the object of giving the rear seat passengers a better ride. The roll-bar ran 9405 miles over particularly severe conditions and showed no signs of deterioration after that mileage. The rubber bushes were in good condition and no wear or play could be detected during normal daily inspection. | ||