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).
Results of worm axle tests comparing different lubricating oils by temperature and horsepower.
| Identifier | ExFiles\Box 2\6\ B002_X 140 141 157-page181 | |
| Date | 21th February 1912 | |
| TBB18/L21212. February 21st. 1912. Ref.N4/B7212. Re Worm Axle. Mr Bailey is not yet giving his attention to worm axles, owing to the pressure of work in connection with bevel gears, but he will keep these points before him. The results of the worm axles tests are as follows :- Temperature of R.R. worm axle at 1000 r.p.m. Time | Temperature Centigrade. ---|--- | Prices Gear oil | Prices "A" | Castor Oil | Lard oil | Wakefields castor oil Start | 32º | 43º | 42º | 49º | 43º 5 mins. | 49º | 57º | 54º | 60º | 52º 10 " | 60º | 67º | 61º | 70º | 60º 15 " | 70º | 77º | 70º | 79º | 69º 20 " | 83º | 86º | 78º | 84º | 79º 25 " | 94º | 90º | 88º | 89º | 83º 30 " | 104º | 95º | 92º | 93º | 89º 35 " | 115º 40 " | 126º 45 " | 134º 50 " | 140º 55 " | 144º 60 " | 149º [Handwritten note on right side] Very good ones seized when overheated. Hotly lost opponents JYR Horse Power at road wheels with R.R. worm axle. Speed | Horse Power ---|--- | Prices Gear oil | Prices "A" | Castor oil | Lard oil | Wakefields castor oil 500 | 18.8 | 18.8 | 18.8 | 18.8 | 18.8 1000 | 36.0 | 36.0 | 36.0 | 36.0 | 36.0 1750 | 45.0 | 45.0 | 45.0 | 45.0 | 45.0 [Handwritten note at bottom] *Was why tested to the seizing up point Figures vary a little from Lucknow JYR [Handwritten note in left margin] X/41 | ||