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).
Petrol flow and consumption tests for a vacuum tank fitted on a 6-EX model, including horsepower data.
| Identifier | ExFiles\Box 77\4\ scan0030 | |
| Date | 15th March 1923 | |
| Mr. Hives from GWH.{George W. Hancock - Head Chateauroux} Y/X3503 15.3.23. VACUUM TANK AS FITTED ON 6-EX. Petrol flow from tank .137" hole - 1 pt. 41 secs. Charts herewith showing pts. per hr. full throttle delivered - average consumption pts. per hr. delivered with various throttle openings. HP. Curve. Average HP. obtained on dyn. 19½ 29 38¼ 45¾ 50¾ 54 55 55 ---------- GWH.{George W. Hancock - Head Chateauroux} | ||