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 with test results for a Smiths Dynamo (Type 2D) under cold conditions, showing speed, amps, and volts.
| Identifier | ExFiles\Box 3\5\ 05-page182 | |
| Date | 4th February 1920 | |
| RR. 238 (100 bks.) SF 152. 4-11-18. J MP (1703) X.295. 162 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: McClurk. I 4/2/20 12 Order-No: X 295 Customer's No. ___ Smiths Dynamo (Type 2D)(O) Normal Conditions (cold) Speed | A-mps | Volts 320 | 0 | 12.45 470 | 2.0 | 13 570 | 6.4 | 13.7 615 | 8.5 | 14 675 | 10.2 | 14.6 712 | 11.7 | 14.85 780 | 12.9 | 15.3 940 | 14.5 | 15.65 1020 | 14.4 | 15.70 ✓ 1150 | 14.1 | 15.85 1310 | 14.2 | 15.85 (Cond A) Signed This Sheet must be filed on completion of the work. Vertical text: RDO | ||