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).
Revised scheme for 20 HP body stiffeners, including modifications to supports and brackets.
| Identifier | ExFiles\Box 41\3\ Scan389 | |
| Date | 31th October 1923 | |
| To BY.{R.W. Bailey - Chief Engineer} from DA.{Bernard Day - Chassis Design} c. to CJ. HS.{Lord Ernest Hives - Chair} X3730 DAL/M31.10.23. RE. 20 HP. BODY STIFFENERS. X.4260 X.3730 X.3522 We send you herewith N.sch.1490 shewing a revised scheme of body stiffeners superseding N.sch.1461. Whilst the actual stiffener pressings remain unaltered we have as a result of our conversations with coachbuilders and a more complete study of the Daimler suspension, decided to introduce several sheet metal cross members. These we have illustrated as being made of two sheet metal pieces welded up. When we have determined a position for them, which we hope will be suitable for all bodies, we shall rivet them to the stiffener as shewn. The forward support has been modified slightly, to give increased stiffness to the body itself as well as a larger area, to the rubber. The bracket is opposite the cross member immediately behind the gearbox, and the step iron which was in that position is shifted back 2" to 3" on the frame. The rear supporting bracket has been strengthened by a top tension plate. We wish Derby to ascertain accurately the relative position of the top of this bracket with reference to the level top of the frame as we are not sure of the actual slope of the Goshawk frame. As indicated on the drawing the level top of the main portion of the stiffener is 3/8" above the top of the frame, and not 1/4" as previously shewn. We shall shortly send you a scheme shewing the scuttle and dash insulation and the necessary sheet metal ironing we propose to use; also a quarter scale drawing shewing any further ironing of the body that this system requires. In this actual case the application is to a 4 door cabriolet. We believe Sales are anxious to have some of the parts very soon. EV.{Ivan Evernden - coachwork} will see them tomorrow and find out the necessary information as to what chassis the experimental landaulet (Barkers') will be fitted to, and will inform you immediately. We think that Derby should fit the brackets and that the chassis should be sent out complete with the body framework. Would you please send a blue print to LHS{Lord Herbert Scott} ? DA.{Bernard Day - Chassis Design} | ||