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).
Engine vibration issues and potential solutions for the GAU-7 Trials Car.
| Identifier | ExFiles\Box 107\1\ scan0161 | |
| Date | 30th November 1932 | |
| 8-7960. c. Hg. from Mx.{John H Maddocks - Chief Proving Officer} MxS/T 30.11.32. GAU-7 - Trials Car FNS/WT 29.11.32. I was under the impression that I had answered your questions. (1) We are surprised that the vibration in the engine was reduced by lowering the loading of the slipper drive to 10 lbs. (2) We do not consider that reducing the loading by removing half of the damping springs will be an advantage. MxS | ||