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).
Permanent cure for squeaking thick leaf springs by rounding off the ends of the leaves.
| Identifier | ExFiles\Box 54\3\ Scan034 | |
| Date | 13th September 1921 | |
| To BR. {T. E. Bellringer - Repair Manager} from R. {Sir Henry Royce} c. to CJ. c. to Wor. {Arthur Wormald - General Works Manager} c. to Hs. {Lord Ernest Hives - Chair} c. to EP. {G. Eric Platford - Chief Quality Engineer} c. to Da. {Bernard Day - Chassis Design} X2628 R5/G13.9.21. X.2628 - RE SQUEAKING OF THICK LEAF SPRINGS. X.3745 I am very pleased to hear that you have discovered that by rounding off the surfaces of the ends of the thick leaved springs the squeak through the side movement has been permanently cured. The matter is of great importance to the company at the moment, and if it should be confirmed that your recommendation proves a permanent cure we shall be very grateful to you. We shall endeavour to find out why it is that it is so effective. I should anticipate that it enables the lubrication to stay between the leaves of the spring and not be scraped off. It may be advisable, in conjunction with it, to use a leather gaiter, so that the oil on the springs would not be washed off. It has been shewn that a bearing should always be eased off to allow the shaft to approach gradually the load carrying surface, and so roll the lubrication in, and in conjunction with the thrust bearing of propeller shafts on steam ships, this arrangement has been carried out extremely thoroughly with very wonderful results. I will get Mr. Hives to fit the Works car up in the same way as you suggest, and we should be only too pleased to make it standard should we find, as we hope and expect, that your conclusions are correct. R. {Sir Henry Royce} | ||