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).
Personal experience with balloon and ordinary tyres on 20 HP and Phantom models.
Identifier | ExFiles\Box 12\3\ X704-0003 | |
Date | 4th January 1926 guessed | |
contd :- -2- Personally I am using balloons on the 20 HP. and ordinary tyres at 40 lbs. pressure on the Phantom, and, going as fast as the roads will allow, any harder tyres feel like solids to me. R.{Sir Henry Royce} | ||