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 a Kestrel FS 6 Cylinder Unit No.2, detailing changes to cylinders, valves, and fittings.
| Identifier | ExFiles\Box 54\4\ Scan166 | |
| Date | 1st November 1933 | |
| To Hs. {Lord Ernest Hives - Chair} from RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} c. Hs {Lord Ernest Hives - Chair} /Tye. 84659. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 13/AP.1.11.33. KESTREL FS. {F. Steele} 6 CYLINDER UNIT NO.2. Specification of the above Unit issued in RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 2/AP.30.10.33. is revised as follows:- Passed to Test 1.11.33. Previous Specification. Revised Specification. Cylinders LOP.E.41684. (Spring Loaded Gland type Liners) Complete as shewn in spec. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 2/AP.30.10.33. Removed. Cylinders LOP.E.40795. Original "A" side Block E.39720 modified to E.41509. Removed 27.10.33. - refitted incorporating the following new parts:- 12-Hs. {Lord Ernest Hives - Chair} 1187 Exhaust Valve Seats N.M.C. 45º (Small bore 1.425 type-thicker flanges) replacing:- 6-Ex.12550 Exh. seats in KE. 965 stellite faced & 6-Ex.12549 Exh. seats -N.M.C. unstellited. Cylinder block modified to Ex.12529 to suit new seats. 6-E.29140/1 Joint rings. 6-E.40407 Rubbers-DTY/10. Valves & Fitts.LOP.E.40218. Complete as shewn in spec. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 2/AP.30.1033. Removed with cylinder,block. Valves & Fitts.LOP.E.40218. Original valves & fittings refitted with above cylinder block incorporating the following new parts:- 6-Ex.12548 Salt Cooled Exhaust valves-Tulip head type produced in KE.965 -Unstellited (45º increased seats) Replacing similar valves with stellite seats. Existing 6 Exhaust Valves-unstellited remachined on seats to Ex.12548. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} | ||