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 notes on a large heavy external slitter drive, detailing issues with rumbles, rattles and luntiness.
| Identifier | ExFiles\Box 25\3\ Scan023 | |
| Date | 24th January 1911 | |
| Engine X634 Slitter drive tests 4100. Large heavy external slitter drive (24 axle) tested on 1663- (at time suffering from rumbles. - felt in S.B. - "coronation" rattles). Coronation rattles improved - unless slack. When tight - (cannot move with bar) E.S. had period rattles. (Mag. drive) + lounty, drive of engine, 14-19-25-32 - etc (14x19 mtr h(26 axle)) + generally lumpy. do. made slacker - 3/4 cwt. - E.S. noise (mag drive) goes. but feeling of luntiness less {stand still general lumpy} When slacker 1/2 turns - commence Coronation rattles, these vanished, quite lost, at 3 turns - high hand slitter tight. (over) R.P. 18/11 | ||