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).
Test results for a Daimler worm-driven axle, recording temperature and max horsepower over time.
| Identifier | ExFiles\Box 126\4\ scan0024 | |
| Date | 22th December 1911 | |
| R.R. 148 (20 H) X468. 22.12.11) G 2263, 500. C.H.S. (crossed out) Daimler Worm Driven Axle Test. Time Temp. Max HP @ 1000 Rev. 9.55 58° F = 14° l 10.5 120° F = 49° l 10.15 180° F = 82° l 10.25 228° F = 109° l & 24.5 10.35 242° F = 117° l 10.45 260° F = 127° l 10.55 270° F = 132° l 11.5 272° F = 133° l Daimler Car Standard. | ||