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).
Failures and modifications to the vehicle frame, gussets, and various rubber components.
| Identifier | ExFiles\Box 99\2\ scan0147 | |
| Date | 28th March 1938 | |
| -4- Rm{William Robotham - Chief Engineer}/Les.6/MH.{M. Huckerby}28.3.38. Another cause of failure was due to a rather sudden change in depth of the frame. This change in section was designed in order that the front end of the frame could be shortened 3½". However, as it appears that the engine will never be 3½" shorter full advantage of the space available has been taken for the latest frame. As a new frame was being built it was decided to alter the frame side gussets as shown on the attached sketch and use rivetting throughout. The new gussets added 11 lbs. to the weight of the chassis. (7) The contact of the main levers against the central bracket supports was due to the failure of the central rubber bushes as reported in Item No.1. (8) The spherical rubbers for the torque arm chafed due to sharp edges of its housing. Chamfers have now been added to the detail drawings. (9) Due to the rubber moulds being with a manufacturer who could not supply combined rubber and canvas, only pure rubber spring seatings were available. We have now received a similar article to that used by Packards. It is interesting to note that Oldsmobiles do not use spring seatings. Rm{William Robotham - Chief Engineer}/Les.{Ivan A. Leslie} | ||