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).
Notes from a visit to Harvey, Illinois, discussing steel types for small aero engine cranks.
| Identifier | ExFiles\Box 178\2\ img108 | |
| Date | 2nd January 1936 guessed | |
| Notes on Visit to Harvey, Illinois. Page 6. 4135. I mentioned Lycoming's use of 3140 steel, nitrided, on cranks for small aero engine. Mr. Wood objected to the nickel chrome steel for reasons stated above. He said, however, that 4135 (chrome-moly.) would give similar results and cost less. Would handle much better in machining and in the dies. Oy. | ||