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 for Kestrel FS. 6 Cylinder Unit No.1, detailing new parts fitted.
| Identifier | ExFiles\Box 54\4\ Scan130 | |
| Date | 1st February 1934 | |
| To Hs. {Lord Ernest Hives - Chair} from RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} Y4659 RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 7/AP.1.2.34. c. Hs {Lord Ernest Hives - Chair} /ms. c. Mr. Jaques. (A.I.D) c. Ps/Tsn. KESTREL FS. {F. Steele} 6 CYLINDER UNIT No.1. Specification of the above Engine is revised as follows:- PASSED TO TEST 14.12.33. Crankcase & Bearings LOP.E.36040. The following new parts fitted:- 1-E.36596/2 Crankcase (T.H.) studded on "A" side only. 1-Set of Main Bearings E.40163-4-5-6-7-8 Produced in RR. Lead Bronze. Remaining parts to complete are existing. -------------------- Valves & Fittings LOP.E.40218. Complete to the above LOP. fitted ex. Kestrel 6 Cylinder No.2. Unit but incorporating:- 12-Ex.12760 Exhaust Valves-tulip head type- Solid Stems - produced in KE.965 - Stellite tips - seats ground to 44 1/2 °. 12-E.28651 Inlet Valves. 24-Ea.E.38324-5 Valve Springs. -------------------- Cylinders LOP.E.36976 (2 Piece type) Complete to the above LOP. "A" side only. fitted ex.Kestrel 6 Cylinder No.2. E.38916 Cyl. head "A" side. E.38919 skirt "A" side. E.36829 Liners modified to Sch.1630. E.41389 Exhaust Valve guides BZ/PC -.437 bore to suit Bristol type Exhaust Valves. E.12520 Exhaust Valve Seats -N.M.C.-.450 small bore. -------------------- continued. | ||