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 record sheet for testing all-Bakelite wiring tubes on a Phantom II engine.
| Identifier | ExFiles\Box 52\1\ Scan145 | |
| Date | 11th August 1930 | |
| X4473. ELECTRICAL EXPERIMENTAL RECORD SHEETS. All Bakelite wiring tubes for Phantom II engine. | Date on. | Location. | Date off. | Remarks. | Miles reading Start. | Miles reading Finish. | Miles covered | Total miles. | |------------|-----------|-----------|-----------------------------------------------------------------------------------|----------------------|-----------------------|---------------|--------------| | 15- 4 - 30 | 22EX | | Fitted to 22EX for test. | 25450 | | | | | 5 - 5 - 30 | " | | | | 25780 | 330 | 330 | | 3 - 6 - 30 | " | | | | 26606 | 826 | 1156 | | 5 - 7 - 30 | " | | Tubes examined. Exhaust side tube burnt and distorted. Carburettor side OK. | | 27918 | 1312 | 2468 | | 11 - 8 - 30| " | | | | 29690 | 1772 | 4240 | Tubes removed from chassis and replaced by standard. | ||