Graph plotting fuel consumption (US Pints per BHP hours) against revolutions from a traction dynamometer test.
| Identifier | ExFiles\Box 75\2\ scan0260 | |
| Date | 8th September 1921 guessed | |
| TEST ON SPFLD. TRACTION DYNAMOMETER BELT DRIVE FROM PULLEYS ON REAR WHEELS TO PULLEYS ON DYNAMOMETER SHAFT. DYNAMOMETER RUNS AT TWICE ROAD WHEEL SPEED OR .615 ENGINE SPEED (16/52 AXLE). US PINTS PER BHP HOURS 1 U.S. Pint = .833 IMP. PINT. REVS TEST. 4. TEST. 2. TEST. 3. TEST. 1. TEST. 6. TEST. 7. TEST. 5. TEST. 8. TEST. 9. TEST. 10. KEUFFEL & ESSER CO., NEW YORK, NO. 324 C. RF | ||
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).