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).
B.60 engine's Wraith damper, spring drive, and a single belt drive experiment.
| Identifier | ExFiles\Box 124\1\ scan0108 | |
| Date | 16th May 1939 | |
| 10HH BY/NS{Norman Scott} c. Rm.{William Robotham - Chief Engineer} DA.{Bernard Day - Chassis Design}8/G.16.5.39. B.60 ENGINE - WRAITH DAMPER AND SPRING DRIVE. PD.429 which was temporarily stopped, will now be required for the crankcase and timing gear on the single belt drive experiment, and these parts should be detailed. Particulars of the water pump and belt pulleys are following immediately. DAY | ||