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).
Conference agenda discussing issues with the Wraith model, specifically cracked valve seats and the propeller shaft.
| Identifier | ExFiles\Box 161a\2\ scan0303 | |
| Date | 18th November 1938 | |
| Sg.{Arthur F. Sidgreaves - MD} Hs.{Lord Ernest Hives - Chair} Rm.{William Robotham - Chief Engineer} By.{R.W. Bailey - Chief Engineer} Da.{Bernard Day - Chassis Design} Hy.{Tom Haldenby - Plant Engineer} Mx.{John H Maddocks - Chief Proving Officer} RHC.{R. H. Coverley - Production Engineer} Gry.{Shadwell Grylls} HPS.{Horace Percy Smith - Experimental Factory Mgr} LA.{L. A. Archer} Cx.{Major Len W. Cox - Advertising Manager} Ll.Smith. CONFERENCE FILE 1381 BY/N.18.11.38. AGENDA FOR CONFERENCE. 22nd. November.1938. WRAITH. Cracked Valve Seats. 8.B.V. was fitted with the original type Head, and 4 valve seats were cracked during the test. This confirms the wisdom of decision to hold up the old heads. HEADS TO BE SCRAPPED Costs. This may be ascertained by G/Rb.{R. Bowen} giving the current figures for production. TARGET ON WRAITH 3282 ALLOWED HOURS Propeller Shaft. As the result of further experience it is proposed to fit a larger propeller shaft when convenient. French tests were satisfactory, but the shaft on Mx{John H Maddocks - Chief Proving Officer}'s car shewed signs of trouble, due to the use of the car in traffic conditions i.e. considerable stopping and starting as against French test conditions. | ||