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).
Test report on the condition of various vehicle components after testing.
| Identifier | WestWitteringFiles\N\2October1925-December1925\ Scan294 | |
| Date | 1st September 1970 guessed | |
| - 5 - The oil holes were free & all other parts of the slipper wheel were well covered with oil. The appearance of the bakerlite rings gave an impression of their having become overheated at some time, as burnt oil was present round the edges. We have cleaned these up, and it now slips evenly at normal loads. The spring drive was in good working order. Dynamo. We have had no trouble with the dynamo. The output has been satisfactory & examination of brushes & holders found them to be in good condition. Oil pump. This has functioned satisfactorily throughout the test. Oil release valve unit. It has been necessary to dismantle this on several occasions, due to the oil pressure dropping at medium & slow speeds. In all cases foreign matter was found under main oil release valve, & after removing same the oil pressure remained steady. We have reground valves as they had become slightly damaged. Battery ignition. Coil Redmanol encases Z.H.710. Improved ventilation to distributor head to L.E.C. 2121. Drwgs. 71005/6. Contact points special large diameter tungsten. The battery ignition has failed once during the test, through wire breaking off at terminal of ballast resistance. The tungsten contact points became pitted towards the end of the test, but did not affect the working of the ignition. These have been taken off & sent to Derby for examination. The coil is still working satisfactorily. The coil case & bracket holding same are O.K. Oil relay for ignition system. This was rather sluggish in action at beginning of test. We found this to be due to the filter being very dirty, causing the flow of oil to be restricted. We have not had any trouble since, & filter has remained clean up to the end of the test. The leather head on piston is still in a flexible condition & does not appear to have deteriorated in any way. The remaining fittings of relay are O.K. Connecting rods, to E.73762/3 with M/S bushes E.73767 in big end, to L.E.C. 2081 (Sch. 2.A.). We have examined the bearings & they appear to be in a very good condition. We cannot trace any signs of the metal cracking, or becoming loose. The bedding of the bearings is very good. No wear is noticeable in the gudgeon pin bearings. Bonnet & fittings. Bonnet handles & catches to N. Sch. 2037. As previously reported the bonnet catches on N.S. have become worn to such an extent that they would not hold. This has been caused by the bonnet dropping too low down & resting on brackets, which hold the fasteners. This released the spring tension of fasteners & so allowed them to chatter. The strain on the lock caused one lug to break, making it impossible to hold the N.S. of the bonnet down. We have since held the bonnet down by using a leather strap. | ||