Mr. Royce's expectation for the Goshawk II flywheel and clutch plates to be manufactured from cast iron.
| Identifier | ExFiles\Box 74\3\ scan0222 | |
| Date | 2nd April 1921 | |
| X 4221 COPY To. DA. {Bernard Day - Chassis Design} from E. {Mr Elliott - Chief Engineer} Copy to C.S. [CROSSED OUT TEXT] " " EPC. ES/D2/4/21. X4221 RE "GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" - CAST IRON FLYWHEEL. Referring to the flywheel, clutch pressure plate, and stationary plate for "Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" chassis, Mr. Royce expects that these will be made in cast iron, a separate gear ing in steel being attached to the flywheel for starting purpose. Details of this letter will be shown on the starter scheme for Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II which will shortly be despatched. E. {Mr Elliott - Chief Engineer} [STAMP: D 4 APR 1921 RECEIVED] | ||
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).