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).
Report page detailing observations and issues with various engine components.
| Identifier | ExFiles\Box 82\1\ scan0099 | |
| Date | 9th April 1933 guessed | |
| - 6 - sideways towards the rear of the engine and was apparently pressing hard on the retaining split ring. There was no sign of the split ring having fidgeted or displaced. The amount of carbon deposit on the piston tops was very small. CONNECTING RODS LOP. E.{Mr Elliott - Chief Engineer} 55884. The metal of the big end bearings was showing signs of cracking when examined. When previously examined there was no signs of cracks. TORQUE REACTION DAMPERS LOP. E.{Mr Elliott - Chief Engineer} 53049. The torque reaction dampers are apt to cause a knock, when the center plate fastened on the frame is not square with the rest of the damper. The noise made is not metalic. It is a friction noise and can be heard and felt in the driving seat. SPRING DRIVE LOP. E.{Mr Elliott - Chief Engineer} 54745. LOW INERTIA. Damping friction 20 lbs at 17 1/2 Rad. Driving spring load 17 lbs at 18 1/2 Rad. The half crankshaft period having become very noticeable indicated that the friction load of the damper had decreased. When the damper was dismantled, the cotton fabrics were found in a very poor condition. The load had pressed the material making it spread outwards and frayed, fluff off the material had been flung outwards and was found in between the damper plates. New cotton fabrics have been fitted. The springs for the damping friction load are compressed practically choc-a-bloc with the new fabrics. This condition will cause rapid wear of the fabrics to take place. VALVES & FITTINGS LOP. E.{Mr Elliott - Chief Engineer} 55049. EX. 7642 Inlet valves. EX. 7643 Exhaust Valves. E.{Mr Elliott - Chief Engineer} 58525 Valve Springs. There has been very little trouble with the valves throughout the mileage. Approx. .002" clearance has been lost with the exhaust valves. Inlets gave no trouble. The inlet valve spring of No six cylinder broke two full turns from the bottom after 11,696 miles. A spare spring fitted only lasted 500 miles. This broke two full | ||