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 failures of wings, valances, and various electrical components.
| Identifier | WestWitteringFiles\T\2January1929-June1929\ Scan239 | |
| Date | 24th May 1929 guessed | |
| -8- WINGS VALANCES LOP F 79335 There has been no failure of wing stays. The wings and valances are in good condition. ELECTRICAL UNITS STARTER MOTOR TO LEC 2647 The starter motor as reported very quickly failed. When dismantled the pinion bearing was found to be very much scored and torn up. The pinion teeth and flywheel teeth were damaged. A new pinion and bearing were fitted. The starter and main switch were considerably damaged during a run through a short circuit occuring while going at a high speed. The main battery wires had to be disconnected to prevent fire taking place. We have not been able to trace the cause of the short circuit. IGNITION COIL LOP D 71650 The coil started to cause mis-fires after a milage of approximatly 8,000, and after a further 700 miles it would not fire the mixture. Test taken on an open circuit the spark was very poor. A spare coil fitted was OK. The coil was sent back to Derby for investigation. DYNAMO Apart from a slight brush noise it has been quite staisfactory. DISTRIBUTOR TO LOP D 71648 LEC 2556 2560 The tungsten contacts caused misfires after a milage of 5000 due to the points being burnt. The contact points had been incorrectly set in the first instance, full surface of contacts not being made. We have had similar settings without the points becoming burnt. We returned the contacts to Derby and received a reply see EFC/ WD{Mr Wood/Mr Whitehead} 52 and EFCI/TII/4/29. DISTRIBUTION BOARD LOP D 71643 AUTOMATIC SWITCH LOP D 718ID LEC 2620 We have not observed any defects in these fittings, the switch has operated satisfactory. The contact points show no sign of burning or sticking. PRESS BUTTON SWITCH LOP D 72088 LEC 2641 The press button switch required monsiderable more pressure to operate than previous push switches. We much prefer the lighter touch. | ||