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).
Piston replacement and compression ratio change for the Peregrine II engine.
| Identifier | ExFiles\Box 2\1\ B002_136 137-page06 | |
| Date | 2nd September 1932 | |
| X136. Test Dept [crossed out] c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} BY/CS3/EH.2.9.32. Re Peregrine II - Piston - Section 5040. Please receive herewith two blueprints of the following drawing:- E.100659 Piston - Flexible which replaces E.100625. The remainder of parts to complete the section are to L.O.P. E.100158. The above is in accordance with memo' Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}7/AD.26.8.32., for reducing the compression ratio from 5.85 to 1, to 5.30 to 1, for supercharger work, and of course is for the earlier chassis with 4.125 stroke. Will you please instruct as required. This completes instructions for experiment. BY/CS. [Stamp] RECEIVED 4 SEP 1932 | ||