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).
Letter to the Aluminium Foundry regarding faulty hydraulic brake cylinder castings and a request for replacements.
| Identifier | ExFiles\Box 121\1\ scan0389 | |
| Date | 16th December 1940 | |
| To Mr. Wheeler (Aluminium Foundry) 1029 Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}4/ET.16.12.40. HYDRAULIC BRAKE CYLINDERS. A short time ago you supplied 12 castings from patterns supplied by us, which were numbered PR.654-1. We have since found that most of the castings were porous in the bore and unsuitable for actual use. Will you therefore please supply 12 further castings, from the patterns which are still in your possession. Will you also please supply 12 further castings of PR.649-1 and PR.649-7. The patterns are supplied herewith. These castings were marked L.20 and L.24 and we would be obliged if you would let us know the exact composition of these alloys. O/N. 753. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} | ||