List of various engine components with associated part and reference numbers.
| Identifier | ExFiles\Box 22\1\ Scan233 | |
| Date | 26th March 1925 guessed | |
| Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)). Camshaft. 507-53D.L.S.4. Crankshaft. 517✓ " Valves & Fittings. 554✓ " Pistons 536✓ " Lorraine. 1078? 54D.L.S.3 PII & Bentley Valves. ✓1427 .54 Valves & Tappets ✓2764 Valves & Fittings 422 /SSDL (S.1.) Crankshafts 4409 /SSDL S1. | ||
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).