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).
Inspection notes on a vehicle's ignition system, detailing coil and magneto conditions.
| Identifier | ExFiles\Box 49\5\ Scan205 | |
| Date | 24th January 1919 | |
| RR 300 (120B) (SF 349 24-1-19) MP 200552 88303 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 4. Re 19 ② Battery connected to coil and magneto battery terminal ready for being connected by small nob switch. ③ Magneto disconnected from earth ④ Battery connection to coil broken. The particular coil examined has been very hot at some time, the wire to the magneto terminal which runs close by the core, having fused. There was some corrosion where the coil ends were sweated to the switch plate contacts. Primary ohms .67. Secondary ohms 2,640. Condenser Capacity .16 m.f. Signed F. {Mr Friese} J. {Mr Johnson W.M.} Allen This Sheet must be filed on completion of the work. Sketch herewith. | ||