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).
Six worst features of the New Phantom and the proposed solutions.
| Identifier | ExFiles\Box 47\1\ Scan448 | |
| Date | 28th May 1927 | |
| To CWB. from Hs. {Lord Ernest Hives - Chair} c. to C. H. {Arthur M. Hanbury - Head Complaints} c. to EP. {G. Eric Platford - Chief Quality Engineer} BJ. X4117 Hs {Lord Ernest Hives - Chair} 1/LG28.5.27. NEW PHANTOMCodename for PHANTOM I - 6 WORST FEATURES. Replying to CWB1/GM13.5.27. The following is the position as regards the points raised :- (1) Seizure and irregular action of slipper drives. A modification to the bakelite discs in the slipper wheel embodying oil grooves appears to have overcome this fault. The Test Dept. are now entirely satisfied with the results. All Depots have been informed that whenever slipper drives are dismantled, bakelite washers should be changed for the latest type. (2) Squeaking and sticking of exhaust butterfly baffle. We have a modification which enables this valve to be easily lubricated. On our own cars it is quite successful. We should like if possible to fit it on to a Trials car or any other known bad car for this fault. (3) Improved accessibility for chassis lubrication. WW. are now working on designs for this. (4) Failure of petrol supply - filters or jet choking. We have recently standardised the Zenith filter on the 20 HP. and expect shortly to fit the same filter on to the Phantom. (5) Tappet knocks and piston knocks. Cars now being produced have the improved tappets. The method of lubrication has also been improved. It is agreed by the Test Dept. that present cars are a considerable improvement as regards tappet noises. Alterations in design are being tested to further improve this. As regards piston knocks. Progress has been made with this. The cyl. barrels have been lengthened which has reduced the fault. (6) Improvement in the clutch as regards stopping and smoothness of engagement. An improved design is now on test. We cannot say however that it is going to overcome the faults mentioned. contd :- | ||