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).
Design considerations for exhaust valve seats and guides for an 8-cylinder engine.
| Identifier | ExFiles\Box 124\1\ scan0152 | |
| Date | 14th June 1939 | |
| 1044 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}14.6.39. ALUM 8-CYLINDER HIGH POWER 3.25 BORE. Replying to the queries raised in By/CS.1/EH.9.6.39. Item (3) - Exhaust valve seats. Consider that press-in seats in Alum ARE too experimental and the unit should be started with screwed-in seats. After approval of unit in general, we can try press-in seats. Item (4) - Exhaust valve guides. Consider unit should start life with 4 parallel fit guides with a shoulder and pressed-in from the bottom and 4 parallel guides without shoulder pressed in from the top. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||