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 for the Goshawk 11 front axle, detailing spring attachment methods.
| Identifier | ExFiles\Box 49\4\ Scan147 | |
| Date | 5th May 1922 | |
| X.4263. To BY.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} c. to CJ. Wor.{Arthur Wormald - General Works Manager} Hs.{Lord Ernest Hives - Chair} Da{Bernard Day - Chassis Design}3/1425.5.22. GOSHAWK 11. FRONT AXLE X.4263. We send you herewith N.sch.1285 shewing the method of attaching the springs to the front axle, which Mr. Royce prefers as a result of his experiences in France. It will be seen that the sheet metal sheath teeth engaging solid keys on the front axle is preferred. It is very important that there should be sufficient clearance at the top and bottom of the key to ensure that the spring is gripped and not the sheath alone. In order to ensure that there is an adequate radius on the U. bolt, a packing plate has been introduced between the sheath and the spring, and also in order to prevent the bolt jumping out should the nut come off, a little cap is fitted into the sheath, in addition to which Mr. Royce wishes in the case of both front and rear springs that the centre bolt should be attached by a castle nut and split pin instead of a riveted nut. The hole in the axle is increased to correspond. We believe that the modifications shewn here can be got out of the existing axle forging, but as mentioned in our previous letter the shock absorber is to go out by an amount shewn on this drawing, and this may involve an alteration to the forging. This need not scrap existing forgings. The alteration to the shock absorber itself is obtained by increasing the thickness of the aluminium base. Da.{Bernard Day - Chassis Design} | ||