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).
Requesting a detailed drawing for a crankshaft based on a Lincoln-Zephyr sample, with a list of specifications.
| Identifier | ExFiles\Box 132\2\ scan0164 | |
| Date | 5th April 1940 | |
| 1116 To Rm{William Robotham - Chief Engineer}/IIH C. JNR{Charles L. Jenner} CRANKSHAFT Rm{William Robotham - Chief Engineer}/CTS{C. Trot Salt - Carburation}2/CK{Mr Clark} 5.4.40 Further to JNR{Charles L. Jenner}1/JH/3.4.40. This is to confirm that we have handed to you samples of the Lincoln-Zephyr Crankshaft and the plugs to suit. Will you please therefore produce a detail drawing from PL72 incorporating: 1) Integral balance Wts. 2) Minimum machining 2) Welsh plugs to replace oilers (on pins and journals) 3) Material & Specification 2051. 4) Brinell 241-269 5) Nose to suit Humber damper 6) Specify heat treatment in forging state. (machining to be continuous) Rm{William Robotham - Chief Engineer}/CTS{C. Trot Salt - Carburation} | ||