Drawing No. LeC 1591 for a new pair of gears to alter the second speed ratio for the Goshawk II gearbox.
| Identifier | WestWitteringFiles\I\May1922\ Scan120 | |
| Date | 31th May 1922 | |
| To Hy. {Tom Haldenby - Plant Engineer} from E. {Mr Elliott - Chief Engineer} c. to Od. c. to Wor. {Arthur Wormald - General Works Manager} c. to Hs. {Lord Ernest Hives - Chair} ✓ c. to Sp. {Mr Spinney} ORIGINAL RECEIVED GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11. GEARBOX. X4247 We send you herewith drawing No. LeC 1591, showing a new pair of gears for altering the ratio of the second speed from .627 to .584. Mr. Royce would like one pair of gears only tried for the purpose of testing this new ratio. During a recent journey he made on the Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)), he was inclined to think that better results might be obtained with the second gear slightly lower so as to get more revs. out of the engine. E | ||
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).