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, issues, and condition of various vehicle components including the radiator, bonnet, oil pump, and brakes.
| Identifier | ExFiles\Box 11\2\ 02-page066 | |
| Date | 1st January 1929 guessed | |
| -4- 63 RADIATOR TO L.O.P. E 77675 N.S.2727 /2683/2696 E.C.H.1048. THE DIAMETER OF THE SUSPENSION STUDS INCREASED FROM .25" TO .3125" During the first portion of the mileage, we lost 2 gallons of water for every 200 miles run. We found this to be due to the overflow pipes coming in a direct line with the outflow of water of the top inlet pipe in the radiator. We have bent these pipes clear of the water flow, the result being that fairly little water now is lost. On an average approximately 1/2 gallon of water is needed for the 600 miles trip. We are of the opinion that the cast aluminium outlet which is fastened to the bottom of the radiator is hardly sufficient in area to take the water flow. Tests could be taken at Works to ascertain whether this is so or otherwise. The drain cock fitted to this portion is not in a very accessible position and requires a screw driver to operate it. Our experience would tend to point that a handle would be far preferable to operate the tap. RADIATOR SHUTTERS TO L.O.P. E 77676 N.S.2683. The shutters mechanically have operated satisfactorily. We are of the opinion that an improvement would be made if the control knob for the shutters had a mark showing the direction of open and closed. The present markings are very difficult to see from the driver's seat, as they are hid by the instrument board. To keep an average water temperature of approx. 80°C during the runs, the shutters have been opened approx. 1/4 of the control. BONNET TO L.O.P. E 77677 STANDARD CATCHES AND LOCKS. The bonnet so far has been very free from knocks and no trouble has been experienced with bonnet catches. The first section of the top hinge nearest radiator has broken away due to being too tight a fit. It does not in any way interfere with the opening of the bonnet and is not so far detrimental. A little wear has taken place where the bonnet comes in contact with the radiator and dash, and at the corners the ferodo fabric having worn has allowed the bonnet to come in contact with the brass flange. STARTING HANDLE TO L.O.P. E.78553. This appears to be satisfactory for starting the engine up. The length of it makes it very inconvenient for the space available for tools, etc. OIL PUMP & DRIVE TO L.O.P. E 77662. The oil pump has become noisy and can be heard in the driver's seat. There has been no failure of oil supply, but it varies considerably after the brakes have been applied. FAN TO L.O.P. E 77672. There does not appear to be any modification needed, lubrication is O.K. Two links have been taken out of belt since leaving Derby. FRONT AXLE & BRAKES TO L.O.P. G 77305 N.S. 27189 2628 2758. G.L. 280/I 265 274. There does not appear to be any faults with the front axle. We have had trouble with the lubrication of the o/s brake shaft. The bijur lubricator had not been passing any oil. This was taken out and a new one fitted which passed 4 drops per minute. The brake drums were found to be fouling the anchorage bolts of the brake shoes. These had been rubbing hard on the inside of the drum. We found that it was possible to reduce the length of the bolt by .0625" which gave us clearance. The condition of the brakes showed that they had been doing considerable work and inside the drums were covered with black powder. There was no | ||