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).
Improvements to the Goshawk 11 side steering tube to eliminate side kicks by substituting balanced springs.
| Identifier | WestWitteringFiles\H\April1922\ Scan14 | |
| Date | 6th April 1922 | |
| To. from Da.{Bernard Day - Chassis Design} c. to S.J. c. to EB c. to EP{G. Eric Platford - Chief Quality Engineer} ORIGINAL. Da{Bernard Day - Chassis Design}1/M6.4.22. GOSHAWK 11. SIDE STEERING TUBE. X4265 With regard to making more improvement on the side steering tube with a view to eliminating the effect of the side kicks we suggest that the first experiment to try is to substitute balanced springs for set-up springs. We are not sure whether the 40/50 still uses balanced springs instead of the set-up type, but we believe that it is so, and if so, this would constitute a distinct difference between the 40/50 and Goshawk 11. The way to balance them is simply to remove the 1/8" castle nuts which load up the springs in fig. 2 on N. sch. 702. It may be found that this would have a marked effect in reducing the HP. of the kicks. We then suggest that the next thing to do, would be to reduce the set-up spring pressure from 300 lbs. as instructed on N. sch. 702, to 200 lbs. and increase the possible motion from .075 a side, to .150 a side. We should add by the way that this increase of motion would also be required with the balanced springs. In order to reduce the load from 300 to 200 lbs. it will be necessary to lengthen the stems on the ball pad, reduce the length of the distance piece at the rear end of the steering tube, and remove the adjusting packing at the forward end. (1) | ||