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).
Reliability and application of Studebaker-type crankshaft dampers.
| Identifier | ExFiles\Box 132\2\ scan0157 | |
| Date | 17th February 1940 | |
| 1116 To CTS.{C. Trot Salt - Carburation} c. Rm{William Robotham - Chief Engineer}/JRS. Rm.{William Robotham - Chief Engineer}4/ML.17.2.40. Crankshaft Dampers. There still seems to be some confusion as to the present position of crankshaft dampers. The only damper which gives satisfaction on endurance tests and that so far has proved itself to be reliable without lubrication is the Studebaker type. This is at present fitted to 30.G.6. and 33.G.6. and as far as we know, on the 8-cylinder engine is as satisfactory for eliminating crankshaft periods as it is reliable. This wants checking up, particularly on 30.G.6. which has done big mileage. If this is correct then we ought to instruct Studebaker dampers for all 8-cylinder engines. We have still got two cars running about with the Buick type harmonic damper and ll.B. proved once again that this does not behave consistently. These dampers should be replaced by Studebaker dampers as soon as possible. With regard to 6-cylinder engines, until we have settled the question of whether we want spring drive, chain drive or gear drive we shall not be able to rationalise either the damper or the crankshaft. Rm.{William Robotham - Chief Engineer} | ||