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).
Inquiring about the production status of various car pistons.
| Identifier | ExFiles\Box 15\3\ Scan034 | |
| Date | 17th September 1929 | |
| To RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Tsn. X7040 Hs{Lord Ernest Hives - Chair}/Tsn. 2/MJ.17.9.29. X7040 X5040 CAR PISTONS. ------------ We should like to know the position of the following piston, i.e., whether made and tested, made, or making. S.S. ----- E.79500 (LEC.2737) Features: (1) 4.125" long. (long skirt.) (2) 4 rings - all pinned. (3) New gudgeon pin retaining rings. (4) Thinner diagonal webs in head. E.79355 (1) 4.125" long. (2) 5 Rings as Phantom - 3 pinned. This appears to be the production edition of E.79500. L.E.C. 2729. Built up piston of Invar with aluminium side- pieces and head. 20 HP. ====== L.E.C. 2693 (3.250 bore.) E.55324. (1) 3.625" long. (2) New method of retaining gudgeon pins. (3) 4 rings, bottom one perfect Circle type. L.E.C. 2577 shows some comic rings for the 3.000" bore. Have we received drawings for these for the 3.250" bore? Hs{Lord Ernest Hives - Chair}/Tsn. | ||