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).
Test report detailing the performance and failures of various vehicle components.
| Identifier | ExFiles\Box 5a\4\ 04-page180 | |
| Date | 14th December 1934 guessed | |
| - 5 - BONNET, LOP. R.69470. NON-LOUVRED. The bonnet has knocked considerably on the scuttle at the oB. The hinge of the bonnet having hammered a deep ridge in the scuttle. The NS.{Norman Scott} is only slightly marked. There is a fair amount of slack in the hinges of the bonnet fasteners. SIDE SPARE WHEEL CARRIERS. LOP. D.53815. There has not been any slackening of the bolts holding the brackets to the frame during the mileage. The side spare wheels have been steadier than on the previous test. ELECTRICAL SYSTEM. IGNITION BATTERY. [Handwritten: WSt-] The contact points burnt out and caused a failure of the engine after 4056 miles. A new set of contact points had to be fitted. The condensor was checked and no fault could be found with it. The new contacts are still good at this mileage. IGNITION MAGNETO. [Handwritten: WSt] Upon changing over to magneto, the engine would not fire. An examination showed that at some previous period a short had occured on the high tension pick up. The current had tracked along the insulation from the carbon brush to the metal of the case. After cleaning, the spark was obtained and fired the engine regularly. The outside of the brush collector had become blistered by the heat from the exhaust pipe. K.L.G. F1. TYPE EDISON PLUGS. [Handwritten: WSt-] A set of new plugs were fitted at the beginning of the test. After 6640 miles, one plug gave out completely. The copper washer at the top of the insulation of the centre electrode having fused and shorting to earth. The remaining plugs after 9300 miles gave trouble, the copper washer in each case being the cause. We have not experienced this failure before and suspect a change in design. PETROL PUMP. A petrol pump was fitted in the centre at the top of the dash-board for this test. It is too noisy, and would completely fail in hot weather. It has temporarily failed during the cold weather after a hard run and standing for a few moments. The heat vaporised the petrol in the pipe lines on the dash, the pump working vigorously for five minutes after restarting. PETROL TAP. LRO.3971. SPENCER TYPE. [Handwritten: Bouncing] Fitted in floor boards for ease of access. The tap is access-ible and has operated satisfactorily, but when turned on to reserve, all the tension of the spring is released from the knob, which then rattles considerably. | ||