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).
Need for a better lubricant, like castor oil, and improved gear design for gearboxes and back axles to reduce wear.
| Identifier | ExFiles\Box 75\1\ scan0054 | |
| Date | 30th April 1913 | |
| R.R. 235A (150 H.{Arthur M. Hanbury - Head Complaints}) (PP. 958. 30.4.13) E.P. 4141. COPY. Mr. Bailey from F.H.R. Copies sent to: Mr. Johnson. Mr. Wormald. Re Tests of Various lubricants. (on Gearboxes etc.) I feel sure that we ought to provide a better lubricating oil for the gearbox and the back axle, especially the latter. With reference to the back axle it is a very difficult question to compare the wear of one back axle with another, but one of the means of reducing this wear would be the use of a thoroughly efficient lubricant. I should expect to find such a lubricant in either castor oil or a mixture of castor oil and a fairly heavy mineral oil. The wearing of the bevel gears into a state of noisiness will be found to vary, it will be increased by a low gear, a coarse gear and with a gear which has to have a large modification to avoid interference. We ought therefore to use the finest gear with the widest tooth and, probably a larger angle of action so as to require less moving of the pitchline from the centre of the height of the tooth. F.H.R. | ||