Sketch and notes for a memo regarding the Goshawk II engine's bottom half crankcase.
| Identifier | WestWitteringFiles\F\April1921\ Scan9 | |
| Date | 6th January 1941 | |
| R {Sir Henry Royce} /G 7421 ① CROSS WEBS ARE RETAINED ONLY OPPOSITE MAIN BEARINGS Nº (3) & (5) ② THE STRAINER POT IS STOOD ON SIX BOSSES AS SHOWN. EACH BOSS CONTAINS EITHER A PLAIN STUD OR ONE WITH CSK AS IN SKETCH. THE UPPER ENDS SECURING THE STRAINER WITH NUTS & SPRING WASHERS. THE LOWER ENDS SERVING TO HOLD THE STRAINER COVER. IF PLAIN STUDS ARE USED THE INNER NUTS SHOULD BE RIVETED. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II - BOTTOM HALF CRANKCASE SKETCH FOR MEMO R {Sir Henry Royce} /G 7421 | ||
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).