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).
Blueprint for the Goshawk 11 carburetter, detailing modifications, a silencer trial, and design features.
| Identifier | ExFiles\Box 5\4\ 04-page030 | |
| Date | 19th October 1921 | |
| X4228 To Da.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} c. to CJ. c. to Wor.{Arthur Wormald - General Works Manager} c. to BY.{R.W. Bailey - Chief Engineer} c. to Hs.{Lord Ernest Hives - Chair} E6/G19.10.21. GOSHAWK 11. CARBURETTER. X.4228. We send you herewith a blue print of Lsd.1467 shewing the Goshawk 11. Carburetter fitted with a silencer. The silencer should be tried with and without the internal drilled tubes. We wish to point out that the starting carburetter has been slightly modified by Mr. Royce, but this blue print shews the final design. We are dealing with the alterations to the control gear for operating the butterfly throttle only by foot and hand, which should simplify it considerably, and we are scheming the necessary connections for working the small cylindrical barrel throttle from the instrument board for starting purposes. This blue print also shews a .187" copper tube sweated into the bottom of the carburetter to act as a petrol drain. We think this tube clears the control gear. The air passage of the starting carburetter is a drilled hole communicating with the air inlet to the main jets, thus all the drainage petrol is dealt with by the one pipe. The overflow point of the starting jet has been made the same height as the main jets. E.{Mr Elliott - Chief Engineer} | ||