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).
Inspection report detailing wear and issues with an automatic governor, water pump, and clutch assembly.
| Identifier | ExFiles\Box 179b\3\ img064 | |
| Date | 24th January 1933 guessed | |
| -2- Automatic Governor Ignition. The governor control of the ignition apparently ceased to function early on in the test. The cam spindle had rusted and become solid in the governor sleeve. This prevented the cam from being automatically advanced. It also caused loads on the remaining governor parts which produced excessive wear. It is surmised the reason for the failure is the lack of breathing in the governor case. The inside of the governor case does not appear to have been flooded with oil. There is a deposit of rust, fine metal and oil sludge on the inside of the case, the only definite oil showing was clean oil fed from the land lubricator. Water Pump. The rotor of the water pump has worn considerably. This has been caused by the wearing of the steel thrust pad. This piece was made in stainless steel as against our present practice of making the thrust screwin W/MC with a B/FC disc sweated in the end. Timing Gears. The camshaft cast iron timing gear wheel is in a very good condition. Clutch. mild steel The cast iron friction surfaces of the clutch are ridged. These ridges developed whilst the ferodo with wire binding was in use. We later on fitted the R.A.D. material. This material was satisfactory with regard to non slipping and smooth engagement. Examination at finish of test shows that it becomes grooved by slight picking up of the mild steel faces. The fabric inserts for the clutch springs has prevented any heat developed by the clutch reaching the spring. They still remain up to there working load. The spigot of the clutch in the flywheel casing became rusty but did not interfere with its sliding action. There is no scheme for oiling this part. Packing the ball race with grease when assembling would prevent the rusting and would give ample lubrication. No appreciable wear took place of the fabric discs. With this type of clutch there is no provision made for adjusting the clutch fingers. The centre driving plate is made in psw steel. This should not be necessary now that the fabric is attached to this plate. | ||