Analysis of a spongy gear change feel on the Wraith model, proposing an increased diameter shaft to improve stiffness.
| Identifier | ExFiles\Box 8\11\ 11-page090 | |
| Date | 16th July 1937 | |
| 628. By. {R.W. Bailey - Chief Engineer} from Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} c. Hdy. {William Hardy} Rm {William Robotham - Chief Engineer} /Gry {Shadwell Grylls} 1/R.16.7.37. CHANGE SPEED MECHANISM - WRAITH. There is a considerable feeling of sponge when changing gear on a Wraith car, particularly if the synchro-mesh cones stick, such as when trying to engage second gear from rest. We have compared the parts with those on a 25/30, and find that the shaft between the gear lever and the selector pendulum is the same diameter in both cases, but 15" long on the Wraith and 10½" on the 25/30. We think the Wraith shaft should be increased in diameter, so as to be at least as stiff as that on the 25/30. Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} | ||
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).