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 Lucas E575 Dynamo, showing voltage output at various speeds.
| Identifier | ExFiles\Box 36\4\ scan 044 | |
| Date | 18th May 1920 | |
| X.30146 RR 300 (120B) (SF 549 24-1-19) MP 200552 90947 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: W Clark Date: 18/5/20 Order No.: - Customer's No.: H/321. Re: X Lucas E575 No. R1341 Dynamos. .OC Volts. Cold 18°C. (Expl Machine) Speed | Volts. 525 | 10.0 590 | 11.9 660 | 14.0 735 | 16.4 765 | 17.2 Signed: [Signature] This Sheet must be filed on completion of the work. | ||