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).
Investigations into 'over-oiling' complaints on the New Phantom model.
| Identifier | ExFiles\Box 47\1\ Scan181 | |
| Date | 1st December 1925 | |
| R.R. 493a (5000) (D.D. 31. 12-6-25) J.H.D. EXPERIMENTAL REPORT. Expl. No. 48770 REF HSS/L/01.12.25. To R: from Hs.{Lord Ernest Hives - Chair} c. to CJ. BJ. c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} NEW PHANTOMCodename for PHANTOM I COMPLAINTS. The following is the position in the Experimental Dept. for overcoming the complaints given in BJ/L/30.11.25. OVER-OILING. The whole of the cars given in the list for over-oiling were fitted with 'L' shaped piston rings which were produced in such a manner that they were ineffective as regards oil scrapers. We have not yet heard of a case of over-oiling on a car which has been despatched from Derby with the correct 'L' shaped rings. The car we are watching most anxiously is 8-EX car in France. This car is fitted with the standard pistons and rings - the oil is supplied to the three main bearings only instead of all seven. The average oil consumption on that car is very low - it is so far less than half as much as any Silver Ghost which we have run under similar conditions. When the 10,000 miles is completed, it is our intention to change over and run the car further with the oil supply fed to the whole of the 7 bearings. The experimental results so far show that if the bearings are in a good fit and there is very little leakage, there is not much difference in the amount of oil passing through the engine whether the oil is fed to the three or seven bearings. contd :- | ||