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).
Engine component updates and the comparative future of the Falcon and Eagle engines.
| Identifier | ExFiles\Box 36\3\ scan 037 | |
| Date | 16th February 1916 | |
| Contd. -2- and removal of the extra pipes and the extra oil to the epicyclic gear. No exhaust box but flanges only, as those exhaust boxes we supply are rarely used. R.R.C.H. carburetters with extra range of control, and controls and support of carburetters as arranged on Lcs.785, 788, 789, 790, 791 and 792. X.2031 Airship type of aluminium induction pipes. We may be in a position to fit the friction anchoring to the sun wheel without delaying production. It is such a valuable safety device, and also fit all those things already in hand for the efficiency and safety of the engine, but nothing problematic is to be considered, such as thin water jackets, lighter crankchamber, &c. It may be decided, however, to avoid fitting balance weights, although the crankshaft should be arranged to be machined as at present, so that counterweights can be fitted or not, as later experience will dictate, but the drop forgings for these parts need not at the moment be ordered. It will be quite safe to order up the materials as arranged for the new camshaft drive, even though this has not yet been proved on test. The materials are of a simple nature, and the work upon them is so much easier design than the earlier as to justify our risking the cost and materials. I think it would be a mistake for us to ultimately drop the Falcon engine. I would much rather drop the Eagle. The Falcon will be doing 270 B.H.P. possibly up to 300, and will be a big powered engine and can possibly be lightened. The aeroplane for the Eagle necessarily becomes too large and heavy for much universal use. The Falcons which have been used so far are low powered ones and are not doing their best, being about 215 H.P. Contd. | ||