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).
Test results for a Lucas Dynamo, showing open circuit voltage output at various speeds when cold.
| Identifier | ExFiles\Box 36\4\ scan 025 | |
| Date | 12th May 1928 | |
| RR 300 (120B) (SF 349 24-1-19) MP 200552 X. 30148 90933 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark 12/5/28 Order No: - Customer's No.: F.B 8 Re: R.{Sir Henry Royce} 1293 - Poor Specimen Lucas Dynamo. O.C. Volts Cold. Speed | Volts. 560 | 10.0 600 | 11.2 630 | 12.0 645 | 12.4 720 | 14.4 760 | 15.4 Signed: [Signature] This Sheet must be filed on completion of the work. | ||