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).
The loss of damper poundage in the Bentley V gearbox, attributing it to carbon chips and requesting a new gauze filter.
| Identifier | ExFiles\Box 99\4\ scan0205 | |
| Date | 5th May 1939 | |
| 428 + H50.b To By/NS.{Norman Scott} c.c. to By/CRL.{C. R. Lisson} c.c. to Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c.c. to Rm{William Robotham - Chief Engineer}/APM. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux}4/JH.5.5.39. Bentley V.{VIENNA} Damper control unit in Gearbox. Loss of damper poundage was occasionally experienced in France and was attributed to dirt under the ball valve. This has now been confirmed as several large chips of carbon have been found in the suction pipe. We therefore wish to try a simple gauze thimble on the lower end of the suction pipe. In this position it can be withdrawn with the pipe for cleaning and inspection, and ought to get washed continuously by oil thrown from the gears. Will you please design such a filter in gauze as used for the suction strainer in the engine, and instruct for all experiment cars. We particularly want to get one on the next car for France so the job is therefore urgent. This should not be added to the L.O.P. until it has been tested. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} | ||