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).
Check tests for New Phantom engine over-oiling, detailing procedures and results for four chassis.
| Identifier | ExFiles\Box 72\1\ scan0091 | |
| Date | 25th November 1925 | |
| Handwritten: See CWB BJ CWB Phoned M.H. Have had no reply to 20th Nov query reply to 20th Nov query to see it Typed: To C.J. from CWB. c. to BJ. c. to MP. c. to Wor.{Arthur Wormald - General Works Manager} c. to PN.{Mr Northey} c. to H.{Arthur M. Hanbury - Head Complaints} re:- New PhantomCodename for PHANTOM I Over-oiling. It was decided to make some check tests under the worst conditions of running for causing over-oiling to prove whether the test at present standardised at W. for the detection of over-oiling was sufficiently severe to throw out all engines which were liable to this trouble, in service. It was decided that tests should take the form of running about London, speeds not to exceed 25 m.p.h. at any time, with stops at intervals during which the engine was left running slowly, plugs always being examined at the end of one of these stopping periods. The following chassis were tested :- 114-RO.{C. C. Rose - Export Manager} Distance run 543 miles, over a period of eight days, plugs being quite satisfactory at various stages of the test and at the close. 79-HO. Distance run 50 miles, over a period of two days, plugs being quite satisfactory at various stages of the test and at the close. 114-MG. Distance run 90 miles, over a period of four days, plugs being quite satisfactory at various stages of the test and at the close. 60-HC. Distance run 120 miles, over a period of one day, plugs being quite satisfactory at various stages of the test and at the close. From the consistent state of the plugs throughout the various stages of these tests I consider that we may safely rely on the present test in force at W. to show us whether an engine is liable to over-oil or not in the condition it is in at that moment. I do not consider that this condition is likely to change except by reason of fair wear and tear on the piston rings etc. I do not know what the effect of this fair wear and tear will be, and consider we should obtain ample evidence Contd. | ||