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).
Note comparing the weights of standard and special 9 inch frame sides.
| Identifier | ExFiles\Box 3\3\ 03-page058 | |
| Date | 30th April 1912 | |
| R.R.& C. Ltd. 60M 1/12 (7) CLAY'S. B.E. 2/12/37 ROLLS-ROYCE LIMITED INSTRUCTIONS. To Mr Horwald Order No. Customer's No. X200 Please find herewith the particulars you required re frame sides. Weight of Standard Side | Weight of Special 9" Side 62 1/2 lbs | 58 1/2 lbs Difference 4 lbs Four 9" frames were in the works & their respective weights were 56 3/4, 58, 58 1/4 & 58 3/4 lbs. So 58 1/2 lbs has been taken as a mean. Signed: M Scott. This Sheet must be filed on completion of the work. | ||