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).
The performance and faults of various electrical components, including the starter motor, dynamo, petrol gauge, and headlamps.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page287 | |
| Date | 26th February 1933 guessed | |
| - 15 - ELECTRICAL EQUIPMENT STARTER MOTOR Armature LOP.D.100364. Commutator LOP.D.100363. Frame & Field Winding LOP.D.100274. BEARING BRACKETS LOP.D.100319. The starter motor gave no trouble throughout the mileage. It turned the engine with sufficient speed to start on mornings with air temperatures at zero. It was seldom that two attempts had to be made for the motor to engage. DYNAMO Voltage Regulator to "D" Scheme 546. Armature LOP.D.53770. Armature wound with 16 SWG.Copper Wire. Commutator LOP.D.53235. Frame & Field Winding LOP.D.53809. Bearing Brackets LOP.D.53780. There was one failure of the dynamo to charge through the cutout points sticking, no other faults occurred. The dynamo output was sufficient to keep the battery charged, approx. half the mileage was run with all lamps in use. The brush cover was not removed and the examination was left to Wst at Derby. The output of the dynamo could not be taken owing to the vibration of the ampere needle. PETROL GAUGE The gauge read approx. correct throughout the mileage. No trouble was experienced. LUCAS HEAD LAMPS. The Lucas dipping head lamps having to be half turned for Continental conditions were a source of trouble for a period owing to the close proximity of the mechanism to the case. This caused the wires to short circuit. An insulation pad was fitted between the case and mechanism to prevent the short circuiting. | ||