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).
Performance graph plotting Brake Horsepower (B.HP) and RPM against Torque.
| Identifier | ExFiles\Box 165\7\ img024 | |
| Date | 28th May 1910 | |
| B.H.P. B.H.P. RPM. LBS-FT TORQUE PER...UTION A6/193 Briggsfield 28.5.10 | ||