Proposed new minimum line curves for the 'New Phantom Horse Power' on the dynamometer.
| Identifier | ExFiles\Box 69\4\ scan0382 | |
| Date | 6th July 1928 | |
| 48771 Hs {Lord Ernest Hives - Chair} HP. from Mx. {John H Maddocks - Chief Proving Officer} Mx {John H Maddocks - Chief Proving Officer} 2/T6.7.28. New Phantom(Codename for PHANTOM I) Horse Power Herewith is a copy of curves showing the proposed new minimum line for use on the dynamometer. Mx {John H Maddocks - Chief Proving Officer} | ||
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).