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).
Instructions and test results for a Lucas E575 Dynamo, showing output current and voltage at various speeds.
| Identifier | ExFiles\Box 36\4\ scan 054 | |
| Date | 28th May 1920 | |
| RR 300 (120B) (SF 349 24-1-19) MP 200552 I X. 30146 90974 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr. Clark. 28/5/20# Order No.: - Customer's No.: 7B44. Re: X. 30146. Lucas E575 Dynamo No R1341 Output hot 84°C + Control Current Speed | Main Amperes. | Control Amperes. | Volts. 705 | 0-4.70 | -4.70 | 13.45 820 | 2.95 | -2.80 | 13.80 860 | 4.80 | -2.20 | 14.20 1020 | 6.50 | 0 | 14.55 1110 | 7.70 | +1.70 | 14.80 1250 | 9.35 | +4.20 | 15.00 1370 | 10.40 | +6.20 | 15.10 1450 | 10.80 | +7.20 | 15.20 1545 | 11.00 | +8.35 | 15.20 1705 | 11.35 | +9.75 | 15.25. Signed (Contd.) This Sheet must be filed on completion of the work. | ||