List of specifications for engine components including valves, push rods, camshafts, and oil pump drive.
| Identifier | ExFiles\Box 123\5\ scan0235 | |
| Date | 15th December 1938 | |
| -3- VALVES & FITTINGS (No.2, 3 and 4 UNITS). Inlet Valve Springs to EB.4373 to be ordered from The Tempered Spring Co. Bottom washers to EB.4374. Inlet Valves. Nos. 3 and 4 units to have Motor Component valves as obtained by Roy {Mr H. Royce - Buyer} /Les. Bottom Tappets. All units 1, 2, 3 and 4 to be fitted with strengthened bottom tappets PD.324. (EB.3855/6). PUSH RODS. Nos. 3 and 4 units to have dural rods as instructed in our memo Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} 7/JH.8.12.38. 2 Spare sets of steel tube push rods with flash butt welded ends should be made for trial to PD.332 (Fig. 1.) EXHAUST VALVES. Exhaust valves to be sodium filled. A spare set should be made to the same dimensions as the sodium filled valves but not drilled up the stems for direct comparison. CAMSHAFTS. Nos. 3 and 4 units. To EB.4268 incorporating modification to tooth form By {R.W. Bailey - Chief Engineer} /CS.5/EH.7.11.38. OIL PUMP DRIVE. Details as per our memo Rm {William Robotham - Chief Engineer} /Swdl. {Len H. Swindell} 2/MH. {M. Huckerby} 17.11.38. | ||
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).