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).
List of technical faults and the corresponding actions taken or proposed solutions.
| Identifier | ExFiles\Box 53\4\ Scan065 | |
| Date | 5th December 1923 guessed | |
| -2- POINTS TO BE DEALT WITH. ACTION TAKEN. 9. The offside engine guard flange is broken off. The nearside has commenced to crack. The oil pump guard flange is cracked. Reply from BY:- We have two schemes for overcoming this trouble, one which we fitted to Capt. Broomhall's car, and which has proved perfectly satisfactory, and the second the Springfield scheme. We propose to adopt the Springfield scheme, which, whilst not as good as the other, has been standardised. 10. Valves and Guides. There has been excessive wear on No. 8 and No. 12 valves, No. 8 showing .006" and No. 12, .005". The remainder have only worn up to .0015". No. 8 valve guide has worn .002" and No. 12, .003". For Nos. 8 and 12 we consider this wear excessive for 10,000 miles. Reply from BY:- We do not know how to improve beyond our present position, except that we are now by my suggestion polishing the valve spindles after grinding. I think this will ease matters materially, and further, it is the only hope of improvement unless we go to the unwieldly and expensive proposal of lubricating each Valve guide positively. 11. The Piston in No. 3 Cylinder has seized up at some time during the run, near the bottom of the skirt, and the whole of the rings on this piston are seized in the grooves. They have, apparently, not been working as piston rings for a considerable time, being entirely blocked with carbon. The rest of the pistons are in good condition. The rings on the remaining pistons are all inclined to stick in when cold, but apparently no ill effects have taken place from this. Reply from BY:- We do not know how to improve this matter; possibly the improved method of grinding which was recently instructed may ease matters. 12. Sump Filter. The union flange has commenced to break away. This occurs fairly frequently. Reply from BY:- I propose to add a backing plate inside the thin metal of the filter base, with the object of preventing the latter breaking away round the rivets. 13. Clutch. There is a slight tendency for the fabric to come loose on the small diameter of the cone. Reply from BY:- We think this must have been a question of fitting the facing of the fabric; from a design point of view it is practically perfect. If, however, Hm.{Capt. W. Hallam - Head Repairs} has information shewing that this has occurred on other occasions, we may consider using even more staples than at present - we do not think this departure is desirable, however, unless the complaint is a real one. Reply from Hm{Capt. W. Hallam - Head Repairs}:- We do not consider any action need be taken. | ||