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).
Calculations for modifying the Goshawk 11 carburetter.
| Identifier | WestWitteringFiles\H\April1922\ Scan28 | |
| Date | 20th April 1922 | |
| R.R. 235A (100 T) (S. H.{Arthur M. Hanbury - Head Complaints} 708, 10-12-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2947 TO EP{G. Eric Platford - Chief Quality Engineer} from E.{Mr Elliott - Chief Engineer} c. to CJ Mr Warner Please see EP{G. Eric Platford - Chief Quality Engineer} 22/4/22 ORIGINAL E3/M20.4.22. GOSHAWK 11. CARBURETTER. X4228 (struck through) X2768 We send you herewith a copy of a memo. (E2/M13.4.22.) dealing with the Goshawk 11. carburetter, also a blue print of drawing LeC 1552, referred to there-in. This was got out in accordance with Mr. Royce's instructions that the 40/50 carburetter proportions should be reduced in size to suit the Goshawk, and then compared with the carburetters we were testing. The reduction is based on the 40/50 developing 85.HP. as against the Goshawk 11. engine developing 55.HP. The calculations seem to shew that we ought to make the low speed throat smaller, and the high speed throat larger on Goshawk 11. carburetter. E.{Mr Elliott - Chief Engineer} STAMP: TEST DEPT 22 APR. 22 RECEIVED. | ||