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 proposal for the location of the SS. valve tappet guide.
| Identifier | WestWitteringFiles\T\January1929-February1929\ Scan075 | |
| Date | 28th January 1929 | |
| ORIGINAL [stamped] SECRET. E4/M28.1.29. BY, [crossed out] FROM E.{Mr Elliott - Chief Engineer} Copy to HS.{Lord Ernest Hives - Chair} SS.{S. Smith} VALVE TAPPET GUIDE LOCATION. X7060 [handwritten and crossed out] Referring to LeC. 2646. of which we have sent you a print, this shews the tappet guide fixed by a dowel screw, the tapping hole being drilled after the guide has been placed in position and squared up. We have shewn this proposal because we understood from Mr. Coverley that the present scheme of grooves and pins was found in practice to have too great a margin of error, so much so in fact that these guides on the later SS.{S. Smith} experimental engines were all pinned in position. We do not doubt that this difficulty exists but we should like the responsible department to say whether or not with proper equipment the scheme is practicable, before we send LeC. 2646. to R.{Sir Henry Royce} E.{Mr Elliott - Chief Engineer} | ||