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).
Advantages of the 'Eagle' epicyclic gear for a planned Atlantic flight.
| Identifier | WestWitteringFiles\B\December1918\ Scan3 | |
| Date | 20th December 1918 | |
| To [strikethrough]GS.[/strikethrough] C.J. } from R.{Sir Henry Royce} [strikethrough]To HOR.[/strikethrough] } Copy to DA.{Bernard Day - Chassis Design} " " [strikethrough]BY.{R.W. Bailey - Chief Engineer}[/strikethrough] " " EH. ORIGINAL CONFIDENTIAL. X3420 X1445 RE "EAGLE" EPICYCLIC GEAR FOR ATLANTIC FLIGHT. In enlargement of my note of yesterday (R6/G191218) dealing with the Atlantic flight, the full list of advantages to be derived from the scheme we shall send to Derby tomorrow (No.Lec.1041) is as follows:- (1) Large planet roller bearing. (2) Positive lubrication of planet roller bearings. (3) Localisation of stress in carrier avoided. (4) Any chips from the hardened gears have their capacity for doing harm minimised by clearance around the annulus. (5) Corners of all gears bevelled and rounded after carborising. (6) Spherical seating for thrust. (7) Increased size of rollers in propeller carrying bearing. (8) Longer serrations on sunwheel ([strikethrough]unmasked[/strikethrough]) (9) Propeller shaft in one piece. (10) Friction or rigid anchorage can be used alternatively by changing a few pieces. I do not think that half measures are of any use in dealing with this matter, and that is why I propose that we push on with Lec.1041 with all possible speed. See also letter to Col.Barrington. R.{Sir Henry Royce} | ||