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 faults and observations on various vehicle components including the manifold, ignition, suspension, and pumps.
| Identifier | ExFiles\Box 5a\2\ 02-page046 | |
| Date | 6th July 1908 guessed | |
| -3- EXHAUST MANIFOLD & EXHAUST FITTINGS TO LOP. B50060 LEO 1552. MANIFOLD ALUMINIUM TREATED BY CHOW METHOD. The bottom flange of the exhaust manifold became loose at approx. 3000 miles The manifold had to be taken off, the flange pegged and brazed. At 7500 miles this had again broken away, also the top flange on first pipe the brazing had given way. This was rebrazed and bottom flange welded. It would appear that brazing is not successful for the manifold. It was noticed that after each run the manifold was covered with blobs of aluminium which would be brushed off, this occured until at the mileage of 7500 there was practically no aluminium left on the manifold pipes. The heat the manifold obtains is sufficient to melt the aluminium, therefore it is useless to treat these pipes with this method, the flange on they exhaust pipe which supports the pipe from the chassis frame broke early on in the mileage. The exhaust pipe and silencer have given no trouble. When starting up from cold, the exhaust noise is decidedly tinny and not as quiet as standard when warmed up, there is a distinct boom on the overrun. BATTERY IGNITION COIL TO LOP. D71630 STANDARD. NO MAGNETO. There has been a distinct misfire on the pick up throughout the test, at all other speeds it has not given any trouble. The contact points did not show any signs of burning, and good contact had been maintained. We ran half the mileage with magneto ignition, the same symptoms on the pick up were manifest with the magneto, but not so pronounced. The magneto gave very satisfactory results until nearly the finish of the mileage. The collector ring was then found to be dirty, after cleaning it was quite O.K. the contact points are still very good. ENGINE SUSPENSION AVON TYPE SOFT RUBBERS FITTED TO HLR ENGINE SUSPENSION. LEO 2004 A & B. NOP. M/A.{Mr Adams} F15592. The engine suspension has not given any trouble. The rear mounting is still O.K. and no deterioration of the rubber blocks can be detected. The front suspension shows no sign of failing. OIL PUMP TO LOP. N 53658 STANDARD. We have not had any trouble with the oil pump. The pressure dropped on one occasion, this was found to be due to the release valve stem sticking. Otherwise, there has been no trouble with the oil pressure. The pump gears have remained fairly quiet. WATER PUMP TO LOP. N 15057. This has given no trouble, and no leak from the gland has occured. The lubricating pipe of the pump broke at the bottom junction at approx. 3000 miles. This connection does not appear to be satisfactory, the socket is too short for a good job to be made. A loop is required to take care of engine movement. ENGINE GEAR. These have not been good throughout the test. They have been noisy and rattled, especially the dynamo drive when not charging. A fair amount of carbon was on the magneto drive brake pads, the pads themselves were free in their guides. RADIATOR & SUSPENSION TO LOP. B30052. We have had no trouble with the radiator or suspension. Very little water has been lost during runs, and cooling has been effective. The shutters have opened satisfactorily. There is a slight rattle developed in them, otherwise the condition is good. | ||