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).
Secret memo regarding modified metering plugs for Spectre auto-adjusting tappets.
| Identifier | ExFiles\Box 96\2\ scan0051 | |
| Date | 9th August 1935 | |
| x354 BY.{R.W. Bailey - Chief Engineer} c. RHG. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} SECRET. SpectreCodename for Phantom III - Auto Adjusting Tappets. We send you herewith:- LeC.4633 showing modified metering plugs for the above. Experience has shown that silting up has occurred at the metering annulus. The above scheme shows the end of the plug made a fit in the hole, the metering now being determined by the sizes of the holes in the plug. Drawing to BY.{R.W. Bailey - Chief Engineer} Blueprint to Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell} E/JNR.{Charles L. Jenner} Handwritten text: G.L. Smith. Hartley bound outward (struck through) Rm{William Robotham - Chief Engineer} (signature) Rm{William Robotham - Chief Engineer} (signature) 17-8-35 Rm.{William Robotham - Chief Engineer} Details were issued to Exp Dept on 17.8.35 ROS | ||