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).
2nd and 3rd speeds compared to the S.M. 2nd Phantom and the measurement of oil drag.
| Identifier | ExFiles\Box 94\1\ scan0080 | |
| Date | 3rd January 1935 | |
| (2) HDY.{William Hardy}1/HP.3.1.35. As regards 2nd and 3rd speeds, the conditions appear to be very similar to those on the S.M. 2nd Phantom. We understand that the Experimental Department are preparing a rig to get figures for the oil drag so that the amounts coming from the various sources can be determined. HDY.{William Hardy} | ||