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).
Modifications to the Goshawk II carburettor scheme based on Mr. Royce's instructions.
| Identifier | ExFiles\Box 180\M1\1\ img084 | |
| Date | 17th October 1921 | |
| To DA{Bernard Day - Chassis Design}, from E.{Mr Elliott - Chief Engineer} Copy to EH. " WGR. " HS.{Lord Ernest Hives - Chair} ORIGINAL RE "GOSHAWK II" CARBURETTOR. X4228 In accordance with Mr. Royce's instructions, we send you herewith an advance blue print of the scheme showing the modifications to the above. The points illustrated are as follows:- (1) Air port to extra air supply arranged for connection to a silencer. (2) Modifications to jet mechanisms to accommodate No.1. (3) Final design of jet mixture levers to secure efficient clamping and alterations to position of lever to accommodate silencer. This cancels previous drawing. (4) Pilot jet arranged as an automatic starting carburettor. The intention now is not to use the duplex throttle arrangement but to rely entirely on the butterfly throttle for running the engine, the other small throttle being used only as a separate starting cock connected by suitable controls to the instrument board. The final scheme will follow shortly. E.{Mr Elliott - Chief Engineer} [Stamp]: RECEIVED [Stamp]: FC OCT 17 1921 [Handwritten Note]: Thus after many changes the arrangement which held good 'n from the start of Prod'n in 1922 until 1934 | ||