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).
Manufacturing suggestions for supercharger rotors and other parts.
| Identifier | ExFiles\Box 178\2\ img054 | |
| Date | 26th March 1940 | |
| Rm.{William Robotham - Chief Engineer} - page 5 Serial No. 53 OY 13/D/Mar.26.40 bits of work, especially the G.M. Blackstone saw this in Research. Cannot a clever specialist like Lucas or Hardy Spicer, be per-suaded to make these in various sizes for the trade? Otherwise die-cost is going to run pretty high. Another suggestion, based on the G.M. experimental supercharger rotors, would be to make them as permanent mould aluminum alloy cast-ings. OY | ||