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).
Letter from Rudge-Whitworth Ltd. comparing the mechanical data of their 1912 and 1913 pattern wheels.
| Identifier | ExFiles\Box 159\7\ scan0011 | |
| Date | 6th September 1912 | |
| Rudge-Whitworth Ltd. CYCLE MANUFACTURERS BY SPECIAL APPOINTMENT TO H.{Arthur M. Hanbury - Head Complaints} M.{Mr Moon / Mr Moore} KING GEORGE. Telegrams:- "RUDGE, COVENTRY." Telephone:- 2 G.P.O. 404 NATIONAL. Rudge Works, COVENTRY. 6th September 1912. PLEASE QUOTE THIS REFERENCE NUMBER IN YOUR REPLY. W. T. B. Barrington, Esq., Messrs. Rolls-Royce Ltd., Nightingale Road, D E R B Y. Dear Sir, 1912 and 1913 PATTERN WHEELS. I enclose a table giving a lot of mechanical data of both types. You will remember with the 1912 type you used the No. 5 while with the 1913 type you will use the 100. If you will go through the table you will find that every comparison is overwhelmingly favourable to the 1913 pattern with the sole exception that the maximum angular movement between the hub and the shell is .178° in the 1913 pattern as against .132° in the 1912 pattern, that is of course when everything is new, but in view of the enormous increase in the driving area and the two cone seatings there is no doubt that the slightest wear resulting from not keeping the wheel tight in the first instance would turn the scale in the other direction and that the angular movement in the 1912 Cont'd on sheet 2. | ||