Revised specification for Peregrine No. 5 unit, detailing part modifications and fitting dates.
| Identifier | ExFiles\Box 169\4\ img172 | |
| Date | 12th May 1933 | |
| To hs. {Lord Ernest Hives - Chair} from RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} 3/AP.12.5.33. PEREGRINE(Experimental Bentley car never produced / Aero Engine) NO.5. UNIT. Specification of the above Unit is revised as follows:- Cylinder LOP.E.100861-LeC.3306. Existing E.100871 Cylinder Head modified to E.100931 to suit strengthened exhaust Valves. 6-New E.100926 exhaust guides fitted 27.3.33. Valves & Fittings LOP.E.100204-LeC.3306. Strengthened exhaust Valves E.100928 fitted replacing E.100087. 6-New E.100927 bottom washers. 6-New E.100929 Valve Packings-27.3.33. Pistons LOP.E.100158. Hs. {Lord Ernest Hives - Chair} 945 Scraper rings - .015 Chamfer. Hs. {Lord Ernest Hives - Chair} 949 Gas rings-next above Scraper rings - fitted 25.4.33. Camshaft LOP.E.100112. Hs. {Lord Ernest Hives - Chair} 970 Camshaft 110°-fitted-replacing Camshaft E.100863-107°. 25.4.33. RHC {R. H. Coverley - Production Engineer} /WSC. {W. S. Cassel} | ||
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).