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 Peregrine II, No.6 Unit, detailing new piston rings and a servo motor friction plate.
| Identifier | ExFiles\Box 169\4\ img191 | |
| Date | 25th May 1933 | |
| To Hs.{Lord Ernest Hives - Chair} from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} [strikethrough text] RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel}1/AP. 25. 5. 33. Peregrine.11. No.6. Unit (Cassis Per.3) Specification of the above Unit is revised as follows:- Passed to Test 29.3.33. Pistons LOP.E.100158. The following New rings fitted to existing pistons. 12-E.100036 Piston Rings. 6-Hs.{Lord Ernest Hives - Chair}949 Piston Rings-Gas-Next above scraper rings. 6-Hs.{Lord Ernest Hives - Chair}945 Piston rings-Scraper - .015 chamfer. Servo Motor Mechn. LOP.G.100665. Hs.{Lord Ernest Hives - Chair}950 Friction plate fitted. RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} | ||