Design amendments and material changes for various engine components.
| Identifier | ExFiles\Box 109\3\ scan0131 | |
| Date | 31th March 1941 | |
| -5- HPS {Horace Percy Smith - Experimental Factory Mgr} /CEP.3/EP. {G. Eric Platford - Chief Quality Engineer} 31.3.41. Item No.30-RE1900 Valve Guide Pin. Jnr. {Charles L. Jenner} has agreed to incorporate a flat for air release. Item No.31 - RE.1899 Valve Plunger. An amended detail drawing is to be issued deleting the flat bottom hole but retaining the sphere. Item No.32 - RE.1886 Rocker Pedestal (Centre). HPS. {Horace Percy Smith - Experimental Factory Mgr} agreed to Jnr {Charles L. Jenner} 's amendment to revert to normal practice by forming the oil way with a milling cutter which cuts both surfaces. Item No.33 - RE.1882/3 Rocker Arm. Rm. {William Robotham - Chief Engineer} emphasised that oil holes to the valve end cannot be deleted owing to complaints of squeaking operation. Item No.34 - RE.1676 Crankshaft Pulley. Jnr. {Charles L. Jenner} has agreed to delete the two diametrically opposed keyways and substitute one woodruff key to increased size. The material of the Pulley is to be amended from S/M. to Malleable Iron. Item No.35 - RE.1927 Inlet Valve Guide. It has been agreed to amend the detail drawing to parallel fitting instead of one in 48 taper. Item No.36 - RE.1931 Rocker Pedestal Stud. As the waisted stem serves as an oil way, HPS. {Horace Percy Smith - Experimental Factory Mgr} agreed to accept the detail drawing. Item No.37 - RE.1890 Valve Spring Washer (Bottom). This was not discussed but we have asked for this washer to be deleted in view of the fact the valve spring is to bed on a cast iron cylinder head. Item No.38 - RE.1893 Rocker Shaft Distance Piece. This was not discussed but we have asked for even gauge material and standard diameter. Jnr. {Charles L. Jenner} is to give this his consideration. continued | ||
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).