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).
Continuation of a document listing the weights of various tyres and rims.
| Identifier | ExFiles\Box 106\4\ scan0012 | |
| Date | 22th February 1922 guessed | |
| contd:- -2- with straight-sided rim is 36.7 lbs. and 820 X 120 with beaded edge rim 25.2 lbs. Later - Tyre weights since to hand - i.e. 820 X 120 beaded edge cord cover 25 lbs. 4 ozs. Tube --- --- --- 3 " 11 " 32 X 4 1/2 straight-sided cover 27 " Tube beaded --- --- 3 " 11 " Weights of security bolts for beaded tyres not available. Roy.{Sir Henry Royce} | ||