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).
Propshaft dampers for 25/30 and Bentley models.
| Identifier | ExFiles\Box 85\2\ scan0317 | |
| Date | 4th March 1937 | |
| x Clutch Bentley 25/30 + Bent. prop. shaft dampers. 350 25/30 without dampers 525 Bent. Service have fitted 60, mostly to Bentleys. Do not expect to have to fit dampers to more than a small fraction of the 875 cars. G.S. | ||