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).
Considerations for Goshawk-11 springs, pedals, and steering friction.
| Identifier | ExFiles\Box 46\2\ Scan147 | |
| Date | 11th April 1932 | |
| X4086 Hs.{Lord Ernest Hives - Chair} from EP.{G. Eric Platford - Chief Quality Engineer} EP{G. Eric Platford - Chief Quality Engineer}1/LG11.4.32. X4219 X4086 GOSHAWK-11. The following are points for consideration:- Goshawk springs. We are now being supplied with a number of Woodhead springs which, I understand, are made to their design and which are a cheaper line than those previously supplied by Woodheads. These springs are fixed on 4-Goshawk-11 The R-R type have leaves which are tapered off at the ends and which EY. contends are better than the Woodhead design type in which the ends of the leaves are parallel, for"none squeak-ing". 5/6-Goshawk-11 are fixed with similar springs as 4-Goshawk-11. We have been able to fix on 7-Goshawk-11 the Woodhead design type of springs. There are no gaiters on 5-Goshawk-11. 6-Goshawk-11 and gaiters are now being fixed to 7-Goshawk-11. Roy.{Sir Henry Royce} is rather anxious to obtain some settlement on this matter so as to know what established spring can be obtained for production and he is rather anxious to use the Woodhead design as they are less in price than the R-R designed type by about 20% for a complete set. TMW. reports that on the bumping test these springs give the usual standard performance as compared with other springs. We have not tested them thoroughly on the road but will be able to give a better opinion of these when we have run 7-Goshawk-11 as a complete car. You report that the springs in your car are squeaking. Do you consider this is unreasonable and do you think it shows that there may be no direct virtue in this type of spring as compared with the Woodhead type of spring from this point of view? "B" type Pedals. A scheme has been got out for alteration to the pedals as now fixed on 3-Goshawk-11, but we have not taken any further action until we hear that such is condoned by R.{Sir Henry Royce} Could you let us have any information on this matter? Friction in Steering. When you have tried 6-Goshawk-11, we should be glad to have a general opinion about it. Is there a strong objection to increasing the friction in the steering pivots, and if so, why? As previously explained, we have been able to make the steering on 2-Goshawk-11 quite reasonable by the addition of friction to the front pivots which seems to be remaining good in this respect. An important point in connection with this for the front pivots in the front axle is, the lubrication to the pivot pin bearings - this is especially the top bearing, as the only way the oil can get to the bearing is by passing through the thrust bend and as this is now a flat fibre joint, very little or no oil appears to pass into this bearing. We are receiving complaints contd:- | ||