Proposal from Mr. Royce for machining the 'Goshawk II' camshaft bearings without using extra cast-on wings.
| Identifier | WestWitteringFiles\F\April1921\ Scan12 | |
| Date | 8th April 1921 | |
| To WS. from E. {Mr Elliott - Chief Engineer} Copy to CC. X4229 RE "GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" CAMSHAFT BEARINGS. We send you herewith Lec.1374 showing Mr. Royce 's proposal for machining the "Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" camshaft bearings without using the extra cast-on wings (which have to be milled off afterwards) at present in use for our other engines. The top half of the camshaft bearings overlaps the bottom half, owing to it having oil catcher pots. This overlap is used for clamping purposes on the boring jig. To obtain a datum for drilling each half, Mr. Royce suggests milling the bearing sides, as shewn on Lec.1374, it does not matter if these milled faces shew on the finished top halves of the camshaft bearings. E. {Mr Elliott - Chief Engineer} ORIGINAL. RECEIVED APR 9 1921 | ||
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).