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).
Applying Terraplane frame bracing to a Bentley chassis to address frame jellying.
| Identifier | ExFiles\Box 86\4\ scan0180 | |
| Date | 1st May 1934 | |
| RHC.{R. H. Coverley - Production Engineer} X 227 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}14/KW.1.5.34. Bentley Frame Jellying and Terraplane Mounting. ------------------------------------------ A few days ago we started to consider how we could apply the Terraplane frame bracing to the Bentley, but the scheme was dropped while we were contemplating putting the La{L. A. Archer} Salle parts on J-III. We have now decided to stick to the Bentley as the car the Exptl. are going to develop, and therefore wish to revert to our original idea. What we want to do is to take the Bentley bump chassis and copy the boxing of the Terraplane frame from dashboard forwards and copy their front cross member as nearly as possible. If we can mock this up with thin sheet aluminium and see (a) whether we have to push the radiator forward and (b) whether there will be any difficulty with the front mounting, we can decide exactly what we should like to fit to one of our own cars. We are allotting Bentley 1-B-IV for the job as soon as we have decided what to make. The tubular members which you made from the dashboard have already shown that we can reduce jellying by stiffening the frame. With the Terraplane mounting the torque reaction dampers are no longer required, which will leave room for the front member to come back. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||