Specification revision for a Kestrel FS. 6 Cylinder No.1 engine.
| Identifier | ExFiles\Box 54\4\ Scan137 | |
| Date | 1st February 1934 | |
| To Hs. {Lord Ernest Hives - Chair} from RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} c. Hs {Lord Ernest Hives - Chair} /Ins. (strikethrough) c. Mr. Jaques.(A.I.D) c. Hs {Lord Ernest Hives - Chair} /Ten. (strikethrough) Handwritten: 846591 RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 11/AP.1.2.34. KESTREL(Aero Engine) FS. {F. Steele} 6 CYLINDER No.1. Specification of the above Engine issued in RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 10/AP.1.2.34. is revised as follows:- PASSED TO TEST 23.1.34. Previous Specification. Valves & Fitts.LOP.E.40218. 12-Ex.12760 Exhaust Valves - Solid Stems-Tulip head type -produced in KE.965 - Stellite Seats. Seats ground 44° 30' Removed. Cylinders LOP.E.36976. 1-E.38919 Cylinder skirt. 6-E.36829 " liners.- modified to Sch.1630. Removed. Revised Specification. Valves & Fitts.LOP.E.40218. The following new parts fitted:- 12-Ex.13145 Salt Cooled Exhaust valves-Bristol type Head - produced in KE.965 with Stellite tips. Seats ground to 44° 30' Remaining parts to complete are existing. Cylinders LOP.E.36976. The following new replacement parts fitted:- 1-E.41096 Cylinder Skirt. 6-E.41095 " Liners-S/HC. 6-E.41094 Rubbers-DTY/10. 6-E.41091 " " 10-E.41168 " -B/MRR. 24-E.36825 " " Existing cylinder head E.38916 modified to E.41088 to suit liners. Existing Exhaust Guides E.41389 opened out in the bore from .437 to .497 to suit Salt Cooled valves. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} | ||
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).