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).
Graph of Brake Horsepower at full throttle measured on a Springfield Traction Dynamometer, comparing three different exhaust configurations.
| Identifier | ExFiles\Box 50\3\ Scan273 | |
| Date | 14th January 1924 | |
| FULL THROTTLE. B.HP. ON SPRINGFIELD TRACTION DYNAMOMETER. Solid Line - Hot throttle with exhaust blowing straight thru jacket. Boilers on. Dotted line - Hot throttle, cock turned off, exhaust cannot blow thru jacket. Boilers on. Loaded up at 500. Broken Line - Standard Springfield scheme. H.C. DIETZGEN CO. CHICAGO-NEW YORK NO 346 B Jan. 14, 1924 L.H.C. | ||