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).
Cracked No.2 exhaust valve on a Bentley III No.1 unit and the replacement of other cracked valves.
| Identifier | ExFiles\Box 100\3\ scan0012 | |
| Date | 11th October 1938 | |
| To BY.{R.W. Bailey - Chief Engineer} from HPS{Horace Percy Smith - Experimental Factory Mgr}/LK.{L. King} c. Ba. c. Rm.{William Robotham - Chief Engineer} c. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} 454. HPS{Horace Percy Smith - Experimental Factory Mgr}/LK.{L. King}2/VS.{J. Vickers}11.10.38. BENTLEY III NO.1 UNIT. We attach hereto for reference photograph showing cracked No.2 exhaust valve EW.1853, manufactured in S/SLV by the Motor Components Co. Ltd., removed from the above unit after completing 53 1/2 hours on the test bed. On No.3 and 6 exhaust valves, produced in the same material, numerous small cracks are apparent under the valve head. These cracks were in existence when the unit was inspected a short time ago - see report under reference HPS{Horace Percy Smith - Experimental Factory Mgr}/LK.{L. King}1/VS.{J. Vickers}5.9.38., and in accordance with Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}3/MH.{M. Huckerby} 4.10.38. Nos. 2, 3 and 6 exhaust valves have been replaced by standard EW.1853 valves produced in KE.965 (Stellited). HPS{Horace Percy Smith - Experimental Factory Mgr}/L. King. | ||