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).
Bearing performance issues, a special tool for repairs, and instructions for re-conditioning crankshafts.
| Identifier | ExFiles\Box 146\1\ scan0177 | |
| Date | 26th January 1938 | |
| - 3 - Judging from our experience with B. 60 GA, the Hall's bearings hammered out much less (i.e. less sinkage) and therefore the car covered a far greater mileage owing to a white metal No 7 bearing having been fitted. Taking into consideration the above mentioned remarks, I feel sure that you will advocate our having an oil flow machine, and give the necessary instructions. I trust that I have made myself quite clear. Sr. P.S. We made a special tool which we fit on to the crankcase studs, which hold the bearing in position, whereby sufficient pressure can be applied which we think would exclude the necessity of removing the upper half of the bearings, as during the operation of pushing the bearing upwards, the majority of oil is squeezed out between the back of the bearing and its housing. Incidentally, this tool is also used for measuring sinkage. Sr. Note: Please refer to the fourth paragraph on Page No I (except under exceptional circumstances) By this we mean in exceptional cases we would not take up the bearings from underneath, but carry out the big job immediately. Sr. Further note: With reference to the 3rd paragraph on Page No 2, it is understood that the crankshaft removed would be re-conditioned here. We have facilities for both rectifying and re-nitriding. Sr. | ||