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 an H.T. ignition wiring sandwich system.
| Identifier | ExFiles\Box 52\1\ Scan116 | |
| Date | 27th September 1929 | |
| ELECTRICAL EXPERIMENTAL RECORD SHEET H.T. ignition wiring sandwich system of "Maconite" "Super Glover" & "Helsby" Date on: 6-6-29 Location: 21EX Remarks: Fitted to 21EX Miles reading Start: 5498 Date on: 24-8-29 Miles reading Finish: 11467 Miles covered: 5969 Total miles: 5969 Date on: 27-9-29 Location: lab. Remarks: H.T. wires changed owing to crocking of insulation on exhaust side. Miles reading Finish: 12344 Miles covered: 877 Total miles: 6846 | ||