The Goshawk II crankshaft pinion spring drive and slipper flywheel.
| Identifier | WestWitteringFiles\G\October1921\ Scan47 | |
| Date | 6th October 1921 | |
| To DA. {Bernard Day - Chassis Design} from E. {Mr Elliott - Chief Engineer} Copy to Cd. " " HOH. " " HS. {Lord Ernest Hives - Chair} " " HY. {Tom Haldenby - Plant Engineer} ORIGINAL RECEIVED E1/G6/10/21. X4244 X4722 RE "GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" CRANKSHAFT PINION SPRING DRIVE AND SLIPPER FLYWHEEL. With reference to the scheme LoC.1458 sent with our memo E2/G5/10/21, please note the wheelcase shewn is made for attachment to existing crankcases. Future "Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine))" crank-cases should be altered in accordance with further schemes which we shall send very shortly, to avoid using a two-part wheelcase. E. {Mr Elliott - Chief Engineer} | ||
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).