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).
To the Pattern Shop regarding modifications for casting the B.40 Inlet Pipe.
| Identifier | ExFiles\Box 146\4\ scan0110 | |
| Date | 21th January 1941 | |
| 1246 To Mr. Walker (Pattern Shop). Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}5/ET.21.1.41 B.40 Inlet Pipe. This is to confirm that we have handed to your Mr. Bradley RR.2050 Inlet Pipe for the above. The main bore is shown as 1.1875 and the pattern should be proceeded with in accordance with this drawing. Will you please note that we wish to take a casting having a main bore of 1.000" by inserting sheet lead in the core box, and we will be obliged if you will arrange this with the foundry. We would like two pipes with 1.1875 bore and two with 1.000 bore. O/N. 753. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} | ||