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).
Proposing a solution to eliminate road spring squeaks using felt pads and the central Bijur lubrication system.
| Identifier | ExFiles\Box 26\5\ Scan213 | |
| Date | 20th November 1928 | |
| DA.{Bernard Day - Chassis Design} C. R.{Sir Henry Royce} [strikethrough] C. Wot. [strikethrough] C. Hs.{Lord Ernest Hives - Chair} X3806 BY4/G.20.11.28. LUBRICATION OF ROAD SPRINGS. ------------------------- It would appear that if a felt or series of small felt pads were arranged beneath each spring just beyond the tip of each plate, and a supply of oil provided for same from the central Bijur system, that we should entirely eliminate squeaks from the springs. Mx.{John H Maddocks - Chief Proving Officer} has demonstrated that by taking a spring which is squeaking badly and laying on a felt saturated with oil on the underside of the spring so that it can come in contact with the tips and then tighten up the gaiter when the car was taken on the road, the squeaking which was at first still apparent gradualy disappeared. From the foregoing therefore it is pretty certain that if from the Bijur central system a supply of oil could be arranged to a felt pad lying along the tips of the plates sufficient oil would be supplied regularly to the felt to keep an excess of oil there which should eliminate squeaking. This matter is of the utmost importance, and if the design as suggested could be give careful consideration I believe the whole question of spring squeaks could be solved. BY.{R.W. Bailey - Chief Engineer} | ||