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).
Petrol systems, spring shackle clearances, and radiator materials.
| Identifier | ExFiles\Box 38\2\ Scan123 | |
| Date | 11th November 1920 | |
| Contd. -5- EP{G. Eric Platford - Chief Quality Engineer}6/F11.11.20. In view of our experience with this system, however, also the fact that there was no serious trouble taking place with our present petrol system, I do not think that any change is justifiable. This is a point which Mr. Hives could take up on his visit. (13) SPRING SHACKLE CLEARANCE. X.2628. X.4209. X.3900. I certainly agree that absence of excessive clear-ance in these shackles is advisable. The limit of the front spring according to our drawing is .015" nor did I find that less than this was definitely required. They are, however, working to .010" and they point out that when the car has been run and the side surface of the spring eye etc. beds down, the clearance soon increases. Instructions should be given in the manufacture of these spring shackles that the side faces should be correctly machined, and should bed correctly, also that .010" clearance should be worked to as near as possible. With regard to the rear springs, the only trouble experienced in this respect is the feature, about which we have previously complained ourselves, and that is the occasional knock which we have demonstrated to you on a test chassis, caused by the spring and rollers moving on the back axle. They request that this clearance should be reduced, and I certainly feel that this point should receive your favourable consideration. (14) SHEET NICKEL SILVER FOR RADIATOR. X.3456. X.3678. America point out that the metal now being used for radiators appears to quickly tarnish and get a yellow-ish appearance, with which I agree, and they also point out that they can obtain similar sheet nickel silver which they claim does not tarnish anything like as much. I suggest radiators made of this material could be tried to advantage. Have asked them to send sample and analysis etc. | ||