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).
Specification revision document for Kestrel FS.6 Cylinder No.2, detailing component changes.
| Identifier | ExFiles\Box 54\4\ Scan178 | |
| Date | 7th December 1933 | |
| To Hs. {Lord Ernest Hives - Chair} from RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 84689 RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 9/AP.7.12.33. KESTREL FS. {F. Steele} 6 CYLINDER No.2. Specification of the above Unit issued in RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 2/AP.2.12.33. is revised as follows:- PASSED TO TEST 5.12.33. Previous Specification. Cylinders LOP.E.36092. Complete as shown in spec. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 2/AP.2.12.33. Removed. Valves & Fittings.LOP.E39728. Complete as shown in spec. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 2/AP.2.12.33. Removed. Revised Specification. Cylinders LOP.E.36976. (Detachable Head Type.) Original Two Piece block (removed 24.10.33.) refitted re details:- E.38916 Cylinder Head "A" side. E.38918 Cylinder Skirt "B" " E.38829 Liners modified to scheme 1630. The following new parts fitted:- 12-Ex.12620 Exhaust Seats - N.M.C. -45°-Small bore but not thicker type flange. 12-E.41389 Exhaust Guides - BZ/PC (.437 bore to suit Exhaust valves) Valves & Fittings LOP.E.39728. Original set (removed 24.10.33) refitted incorporating the following parts ex.Kestrel 6 Cyl.No.2.- 12-Ex.12760 Exhaust Valves - solid stems -Tulip head. type - in KE.965. reground on seats to 44½°. (Above Exhaust valves were removed from engine 23.11.33) RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} | ||