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).
Car chassis testing for scuttle shake and the structural modifications trialled.
| Identifier | ExFiles\Box 117\3\ scan0028 | |
| Date | 6th May 1940 | |
| -cont'd- -5- Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies}1/SW.6.5.40. We now tried the car with the supporting brackets from the body bottom side, which are bolted to the top andbottom of the Chassis frame removed, and it was obvious we had made the shake worse, we must therefore, have a good hold at this point - test strip 22. Strip 23 shows the final set up, roll-bar off, strengthened scuttle scheme of tubular stays, and angle brackets to the frame, stabiliser fitted to replace the standard bumper. The final set up is shown in comparison with the result obtained at 60 m.p.h. when the car was first taken over for these scuttle tests. A very good point with regard to the Coupe is that the faster the car is driven over 60 m.p.h. the less becomes the shake so that at 80 m.p.h. scuttle shake is not observed. Attached are 4 Photographs. 1. Showing Testing Apparatus. 2. Diagonal stays from dash to frame. 3. Angle brackets to top of frame and bracing in corner of dashboard. 4. Stabiliser fitted to our present bumper brackets, if these brackets were fitted inside the frame the centres would come right for the bumper as tested. 3 Sketches of Stays. 1. Triangular stays as tried in scuttle top. 2. Tubular stays for strengthening scuttle. 3. Supporting brackets at the base of the tubular stays. 6 Sheets of Test Records. Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} | ||