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 the Kestrel F.S. 6 Cylinder Unit No.2, detailing changes to the exhaust valves.
| Identifier | ExFiles\Box 54\4\ Scan176 | |
| Date | 29th November 1933 | |
| 84659 To Hs. {Lord Ernest Hives - Chair} from RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} c. Hs {Lord Ernest Hives - Chair} /Rvc. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 6/AP.29.11.33. 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} 12/AP.27.11.33. is revised as follows:- PASSED TO TEST 28.11.33. Previous Specification. Valves & Fitts.LOP.E.40218. 12-E.30657 Exhaust Valves- Tulip head type-S/SLV. Removed. Revised Specification. Valves & Fitts.LOP.E.40218. The following new parts fitted: 12-E.30657 Exhaust Valves- Tulip head type-S/SLV- ground on seats to 44 1/2° to give heavy bed on outer edge. Remaining parts to complete are existing. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} | ||