The delivery of car 4-Goshawk-11, detailing its specifications including a modified camshaft and balloon tyres.
| Identifier | WestWitteringFiles\K\September1923\ Scan32 | |
| Date | 11th September 1923 | |
| To R. {Sir Henry Royce} from Hs. {Lord Ernest Hives - Chair} c. to CJ. ORIGINAL Hs {Lord Ernest Hives - Chair} 3/LG11.9.23. 4-Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine))-11. X1698 The above car will be ready to bring to WW. at the end of this week. If convenient to you we propose bringing this car to WW - arriving on Tuesday the 17th. inst. The car is fitted with Balloon type tyres. The engine has the modified Camshaft, and 45° angle valves. 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).