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 test performed on a dynamometer.
| Identifier | ExFiles\Box 25\3\ Scan008 | |
| Date | 29th November 1910 | |
| R.R. 148 (20 H) (P 548.10.10.10) G 1130. 4634 . 4100 Engine vibrations 1602 - test with stiffer drive, large diam. on dynamometer, 29/11/10 When tightened right up - revs of engine rattles at. 14 - sometime also & = 350-400. 19 1/2 & 20 " 550 25 " 700-710 37 " 1050 If slacked out to any amount - above absent - EP{G. Eric Platford - Chief Quality Engineer} | ||