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).
Hand-drawn graph plotting various temperature and speed readings over a 250-mile test.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page212 | |
| Date | 10th February 1933 | |
| average speed I S 6-2-33 47.47 - mph OIL 120 90 80 oil to bearing Water 90 70 15 10 air WATER S/80 FROM SUMP TO BEARINGS WATER 70 60 Speed MPH 250 MILES AVERAGE SPEED 47.62 AIR 15 10 5 10-2-33 | ||