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).
Weak Goshawk production coil being improved by paraffin wax impregnation.
| Identifier | ExFiles\Box 45\4\ Scan030 | |
| Date | 29th September 1922 | |
| X.4079.a EFC/T29.9.22. X.4079 - GOSHAWK PRODUCTION COIL No.17. This was returned to us by Mr. Archer for test, because of being weak. After finding that this did not comply with our specification of production tests, it was impregnated with paraffin wax by Mr. Gamble. This considerably improved the performance of the coil and it has since been again handed to Mr. Archer for further trial on the dynamometer. EFC. | ||