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).
Testing a locked solid universal change speed mechanism to diagnose and resolve gear lever rattles.
| Identifier | ExFiles\Box 86\4\ scan0131 | |
| Date | 2nd July 1936 | |
| To E.{Mr Elliott - Chief Engineer} c. to Hdy.{William Hardy} x228 Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}14/KW.2.7.36. Gear Lever Rattles. We have tried N.Sch.4806, in which the outer universal change speed mechanism is locked solid, on B-23-AE. This car has an exceedingly flexible engine mounting, but the gear lever did not rattle under any conditions of over-run or full throttle. To make sure that this was not due to the engine being unusually smooth, we fitted to the car the old non-isolated mechanism. Rattles were immediately apparent at low speeds full throttle, and at high speeds on the over-run. From this we conclude that isolated change speed mechanism with only one universal joint will be satisfactory. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||