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).
Revised specification for the Kestrel FS 6 Cylinder No.2 unit, detailing changes to piston components.
| Identifier | ExFiles\Box 54\4\ Scan179 | |
| Date | 12th December 1933 | |
| J4659 To Hs. {Lord Ernest Hives - Chair} from RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} c. Hs {Lord Ernest Hives - Chair} /Rye. [text is crossed out] RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 4/AP.12.12.33. 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} 12/AP.27.11.33. is revised as follows:- PASSED TO TEST 8.12.33. Previous Specification. Pistons (6-1 Ratio) 1-E.40837 Piston ground to V.1372. 2-E.29207 Piston rings. 1-E.29208 Piston ring. 1-E.30648/1 Scraper ring. Removed. Revised Specification. Pistons (6-1 Ratio) The following new parts fitted in No.3. bore:- 1-E.40837 Piston ground to V.1372. 2-E.29207 Piston ring-inter. 1-E.29208 Piston ring-top. 1-E.30648/1 Scraper ring. Remaining parts to complete are existing. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} | ||