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).
Explaining the operation of the Goshawk II double throttle controls, referencing drawing No. Lec.1454.
| Identifier | WestWitteringFiles\G\September1921\ Scan28 | |
| Date | 23th March 1921 | |
| To DA.{Bernard Day - Chassis Design} From E.{Mr Elliott - Chief Engineer} Copy to Gdv. (Struck through) " " HS.{Lord Ernest Hives - Chair} ✓ -- -- DY.{F R Danby} ORIGINAL: E2/G22/9/21. 2. x4239 RE "GOSHAWK II" CONTROLS. We send you herewith drawing No.Lec.1454 illustrating the "Goshawk II" controls. This drawing has been specially made to shew the principle clearly whereby the double throttle is operated. The accelerator pedal always returns to its stop formed by the floorboards. The throttle mechanism returns to the stop lever marked "A" set by the steering wheel control. The spring "B"has to overcome the small throttle spring "C" when the throttle is allowed to close. The springs "B", "D", and "E" resist the foot pressure of the accelerator pedal while the spring "C" assists the foot pressure. In the actual scheme springs "B" and "E" are designed as torsion springs, but are shewn diagrammatically on this drawing as tension springs for clearness. E.{Mr Elliott - Chief Engineer} FO 23 III 1921 RECEIVED. | ||