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).
Test results on engine torque reaction with different damper configurations and speeds.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page015 | |
| Date | 8th November 1932 guessed | |
| Result. No appreciable difference (3) Slacked right off the damper in the engine mounting keeping side dampers free Result Torque reaction still noticable (not bad) at 11 to 12 MPH. The 13 to 15 practically smoothed out and engine smooth at high speed and on over run (4) Replaced side torque dampers, leaving engine front, slacked off dampers Result Torque reaction from 11 to 12 MPH was not materially affected. The 16 to 18 was more pronounced 20%. At high speed, more especially on the over run, considerably smoother. (5) Front torque damper tightened up keeping side dampers as (4) Result Torque reaction from 11 to 12 MPH was not materially affected. The 16 to 18 was more pronounced than No (4), by 15%. | ||