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).
Material selection for Goshawk and 40/50 coil cases, comparing stabalite and bakelite.
| Identifier | ExFiles\Box 45\4\ Scan134 | |
| Date | 19th January 1923 | |
| X.4079 Extract from R6/M19.1.23. RE IGNITION X.3485. As regards the Goshawk and 40/50 coil, I think we should not depart from stabalite until we are sure the material we substitute does not decrease the efficiency of the coil. We have made a design for this coil case which can be much more easily made in stabalite than the present one with the square base. This coil case can be used with a bakelite cover I believe, and bakelite inside flanges, without reducing its efficiency. The only stabalite part need be the containing case. | ||