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).
Comparison of the New Phantom's road noise and performance against the Silver Ghost model.
| Identifier | WestWitteringFiles\O\January1926-March1926\ Scan79 | |
| Date | 29th February 1928 | |
| (2) are reduced, Body noises of all kinds, and the life of bodies [strikethrough] lengthened by suitable road springs and dampers, and especially by tyres. Semi-balloons at low pressure have enormous effect on the silence due to the roughness of the roads. Here on the French roads the engine and chassis vibrations, and noises outside those from the road surfaces, are practically nothing, and the New PhantomCodename for PHANTOM I is definitely superior to the Silver Ghost, and on the good level road we often get well over 70 MPH., and the acceleration is also definitely better. With another tooth in the back axle pinion we could easily pass 80 MPH. with no opposing wind. R.{Sir Henry Royce} [Stamped Text] H8 29 FEB 1928 ( RECEIVED ) | ||