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).
Upcoming improvements and modifications for the Eagle and Falcon engines.
| Identifier | ExFiles\Box 36\3\ scan 036 | |
| Date | 12th May 1917 | |
| To J.{Mr Johnson W.M.} from R.{Sir Henry Royce} c. to WCE. c. to Hy.{Tom Haldenby - Plant Engineer} c. to EH. X.3031 R1/B12.5.17. X.1906 - Re Eagles and Falcons I understand that the further engines mentioned in your telegram of yesterday would include all the current improvements that have so far been tested, or are on the point of being tested, and I hope they can be two-magneto engines (as is already arranged for the Falcon) with provision for Remy or other battery ignition when instructed. This applies to both the Eagles and the Falcons, but there may be some slight modification to provide for the air pump and revolution indicator, as arranged for on the four-magneto engines. That there would be no vital changes affecting the stress of any part of the engine over that we have already arranged and proved on the test plate and Hangar. That when we get to numbers 1000 Falcon and 1400 Eagle, we shall have fitted the light, simple, and more easily constructed camshaft drives. That we shall have also fitted - Improved tappet levers to give the high lift of cam. X.3029 X.3048 Improved cam to give the super high lift and extra roller clearance. X.2607 X.3031 Aluminium or Magnalium camshaft casing. Water pipes suitable for radiator on nose, and central position of drain cock on the water pump. Improvements to and simplification of the oil piping. | ||