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 issues with various electrical components including pumps, starter, dynamo, and lamps.
| Identifier | ExFiles\Box 82\2\ scan0138 | |
| Date | 1st August 1934 guessed | |
| - 7 - S.U. ELECTRICAL PETROL PUMP. DB.{Donald Bastow - Suspensions}444. Special non-corrosive. The petrol pump has given sign of failure through vapour lock. One of the pumps failed through the main internal wire breaking away from underneath the terminal stud. we understand that this is being brought to the notice of the S.U. company. There has been no sign of corrosion. STARTER MOTOR LEC.3892. WITH INCREASED GEAR RATIO TO LEC.3892. The starter motor has turned the engine effectively, and no false starts have been made. it revolves at speed for some time after engagement and is rather noisy. DYNAMO RR.sch.481. 20/25 H.P. VOLTAGE CONTROL DYNAMO. We have had no failure with the dynamo, the output is as follows : M.P.H. NO LAMPS. ALL LAMPS. 10 0 - 19 18 * Cut in. Cut in - 10 20 + 1 - 10 30 7 0 40 8 0 50 9 - 1 60 9 - 1 70 10 - 1 80 10 - 1 LUCAS COMBINED TAIL AND STOP LAMP FITTED. STOP LAMP SWITCH LCP. DB.{Donald Bastow - Suspensions}419. There has been no further failure of the switch since tightening up the plunger screw. HEAD LAMPS AND FITTINGS RR.sch.614 - 633 TO SUIT LOWERED FRONT CROSS - MEMBER BRACKETS OUTSIDE FRAME IDB.625. BRACKET FOR FOG LAMP. LAMP OPERATED WITH LUCAS SWITCH ON FLOOR BOARDS. The lamps are not as steady with the brackets mounted on the side; considerable movement takes place when travelling on rough roads. The lamps have not given any electrical trouble. They do not dip sufficiently when reversed for Continental use, and the French drivers take objection to them. To overcome this complaint, we have set the lamps down in the normal position, which gives sufficient beam. We have had one of the screws holding the lamp holder work loose, causing the collapse of the holder. The other legs supporting the holder, the screws are sweated to prevent them working loose. | ||