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 report on a 38HP 6-cylinder Silent Knight Daimler car.
| Identifier | ExFiles\Box 126\4\ scan0017 | |
| Date | 6th September 1911 | |
| R.R. 148 (20 H) (W 414. 13.4.11) G 1616. X432. 28009 .6/9/11 Silent Knight Minerva Daimler 38HP 6 cylinder Mr Boltons car tested 50 miles Worm drive. 100% for quietness, does not get hot Chain drive to camshaft. 100% for quietness. Engine full of loud knocks. No vibration periods can be felt, but after 40 m.p.h. engine out of balance & gets worse with speed. Slow running, bad. Springing, bad. Car tested by Mr Hives. EH | ||