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).
On fitting an experimental Goshawk coil and the performance of the standard coil it replaced.
| Identifier | ExFiles\Box 45\4\ Scan291 | |
| Date | 21th August 1925 | |
| EFC. WR.36. V4079c 21.8.25. EXPERIMENTAL GOSHAWK COILS. X.4079c. X.A653. Coil FP.{F. Potts}2 with reduced gauge of primary winding has now been fitted to CF.68, replacing coil TR{Capt. F. W. Turner - Finance}3 (standard in Redmanol case) which has now completed to date 24,023 miles running without failure. HEW. | ||