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 sheet containing handwritten tabulated data for various revolution speeds.
| Identifier | ExFiles\Box 20\4\ Scan021 | |
| Date | 28th October 1918 | |
| RR 6 (500 T) (SF 121. 28.10.18) MP 197597 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Shell No 1 Barom 29.6 Order No. Customer's No. Cons Pt 1/2 hr Revs | lbs lift | Strong | Weakest 2000 | 368 | 208 | 200 1800 | 398 | 194 | 186 1600 | 414 | 182 | 174 1400 | 408 | 188 | 180 70° open | 364 | 172 | 164 50° open | 312 | 152 | 140 Signed This Sheet must be filed on completion of the work. | ||