Design and potential points of failure for the Goshawk II rear springs.
| Identifier | WestWitteringFiles\G\June1921\ Scan63 | |
| Date | 14th November 1924 | |
| To DY. {F R Danby} from R. {Sir Henry Royce} Copy to CO. " " WOR. {Arthur Wormald - General Works Manager} " " HS. {Lord Ernest Hives - Chair} " " DA. {Bernard Day - Chassis Design} X4262 ORIGINAL RE "GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" REAR SPRINGS. RECEIVED, 2 Thank you for your remarks with reference to "Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) II" rear springs, I think we will keep the arrangement we have, but I rather intended that the plate should be parallel in thickness, and have horns to locate the bolts. With this arrangement it can be made the same thickness and temper of the thinnest spring leaf. You will notice that the plate is not very liable to break because it is only subject to stress in the middle during the rebound. We presume, however you thought that it might break where it is grooved across, just under the bolt; this we agree. R. {Sir Henry Royce} | ||
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).