Issue of flats forming on Goshawk 11 valve rockers and proposing a new design with a larger roller.
| Identifier | WestWitteringFiles\H\April1922\ Scan36 | |
| Date | 28th April 1922 | |
| TO Der from E. {Mr Elliott - Chief Engineer} [Der is struck through] c. to Ol. [struck through] c. to For. [struck through] c. to Hy. {Tom Haldenby - Plant Engineer} [struck through] c. to H.S. [struck through] ✓ c. to Ir. [struck through] ORIGINAL. 21 E1/M28.4.22. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. VALVE ROCKERS. X4226 To deal with the question of flats form- ing on the rollers of Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. valve rockers, it might be thought a good scheme to try a larger roller since the present one is only twice the diameter of the pin on which it runs. We have accordingly made a drawing of a suitable rocker carrying a roller 3/8" in diameter instead of 1/4" - Lec 1560 - which we send you herewith. This rocker is also fitted with bronze bushings where it runs on the fulcrum. We have no instructions to try larger rollers but I am writing to Mr. Royce on the point. E. {Mr Elliott - Chief Engineer} [Stamp: REC'D APR 29 1922 HS {Lord Ernest Hives - Chair} ] | ||
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).