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).
Experimental test report comparing coil failure in bakelite versus stabalite cases.
| Identifier | ExFiles\Box 49\5\ Scan009 | |
| Date | 1st November 1922 | |
| Expl. Test Report. EFC {E. Fowler Clarke - Electrical Engineer} 1/T10.11.22. It has been amply proved by numerous tests that whereas coil failure can almost invariably be produced on the coil in bakelite case by extreme conditions, the phenomenon does not take place under any condition of road usage when using a 40/50 coil in its own standard stabalite case. It has also been demonstrated that the substitution of a stabalite case for the bakelite case for the Goshawk coil eliminates the phenomenon. EFC. {E. Fowler Clarke - Electrical Engineer} | ||