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).
New design for Myth exhaust valve tappets, deleting the adjusting screw and nut based on experience with the B.60 engine.
| Identifier | ExFiles\Box 110\2\ scan0001 | |
| Date | 3rd October 1940 | |
| 1036 723 To Rm.{William Robotham - Chief Engineer} c. to Rm{William Robotham - Chief Engineer}/HH. Jnr.{Charles L. Jenner}1/JH.3.10.40. Myth Exhaust Valve Tappets. The experience we have had on the B.60 Cast Iron engine indicates that there is very little need for tappet adjustment for the exhaust valves. In view of this, on Myth, we have made a design PL.360 herewith, showing the adjusting screw and locking nut deleted. The programme will be to make detail drawings with and without the adjustment, but the adjustable type will only be used during the experimental stages when we are determining the correct tappet clearances for silence and variations in timing. Jnr.{Charles L. Jenner} Jhm Original attached to Rm{William Robotham - Chief Engineer}/HH's Copy. Prints to Rm.{William Robotham - Chief Engineer} Ev.{Ivan Evernden - coachwork} Rm{William Robotham - Chief Engineer}/HH. Oy. Ashby. | ||