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).
Instruction note comparing a modified machine's electrical output against a standard one, referencing attached performance curves.
| Identifier | ExFiles\Box 68\4\ scan0089 | |
| Date | 8th December 1924 | |
| RR 239 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To____________________.19____ Order No. P.D. 23 (2) Customer's No.________________ From this curve the modified type of machine appears to be quite suitable, as the output at 2,500 rpm is over 11.0 amperes as compared with 7.5 to 8.0 amperes of the standard machine. Attached is a rough sheet of two curves showing the performance of the machine, before and after alteration to the control brush position. Signed C.A.P. This Sheet must be filed on completion of the work. | ||