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).
Clarifying a misunderstanding regarding the design of the Goshawk II front springs.
| Identifier | ExFiles\Box 49\3\ Scan139 | |
| Date | 10th August 1922 | |
| X4261 BY14/H. 10. 8. 22. Dr. c. Hs. {Lord Ernest Hives - Chair} GOSHAWK II. FRONT SPRINGS. X4261 Referring to Dal/M. 27.7.22. I think you are under a misunderstanding in regard to the design of the front springs. The original front spring which proved to be too light specified a free camber of 3.150 which gave .150" camber under full load. Afterwards, in accordance with your instructions, we reduced the free camber from 3.150 to 2.650 so that we have never had a front spring for Goshawk II with a greater camber than .150" under full load. I am assuming that what you want to do is to add .500" to the loaded camber so that instead of being .150" as at present, this dimension will be .650" and the free camber of the spring in question will then be 3.150", deflecting to a camber of .650" under our specified loads. I think the foregoing covers all your requirements as evidently you are not out to have a stronger spring than the intermediate type which we have put on production, but you wish to have an experimental spring which lifts the front of the chassis relative to the spring, .500" more than with the present standard proposal. BY. {R.W. Bailey - Chief Engineer} Hs {Lord Ernest Hives - Chair} RECEIVED AUG 11 1922 | ||