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 condition and performance of various engine components after testing.
| Identifier | ExFiles\Box 91\2\ scan0371 | |
| Date | 23th September 1937 | |
| - 2 - HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth}1/VS.{J. Vickers}23.9.37. Crankshaft LOP.E.86189. Apart from No. 3 Crankpin, which had been damaged by the failure of the big-end bearing (this damage subsequently caused the failure of the new big-end bearing which ran only 755 miles), the crankshaft was in good condition, wear and ovality being small - details shown on charts EX.I.215 and EX.I.217 herewith. Hoffmann bearing L.S.9. was in good condition. 11 ozs. 10 gms. of "sludge" was recovered from the journals and pins, but as a large proportion of this was composed of Whitemetal from the bearings, the above figure is deceptive in forming an opinion of the amount; actually the volume of sludge was rather less than usual. Modified Oil Strainer LeC.5665 with E.89030 Gauze Frame. This scheme was successful, as the gauze and frame showed no signs of collapsing. Spring Drive LOP.E.86976. Four holes drilled in Centre Plate to improve lubrication of friction faces. This unit was satisfactory, all friction faces being in good condition, except that of the Rear Flywheel, which is pitted. The initial load required to move the Damper was 30 lbs., a load of 25 lbs. being sufficient to maintain the movement. As the Damper was originally set at 25 lbs. this is a distinct improvement on previous cases, in which the load generally increased considerably. (All the above measurements were taken at 17 1/4" radius). Cylinder Liners E.88683. with Rubber Joint Rings E.88682 under the Flange. The condition of this unit was good and the wear small for the mileage - chart EX.I.216 giving details is attached hereto. continued. | ||