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).
Request for characteristic curves for a D.C. electric motor from Lawrence Scott & Electromotors Ltd.
| Identifier | ExFiles\Box 149a\1\ scan0267 | |
| Date | 23th August 1938 | |
| 1269 EXPERIMENTAL DEPARTMENT. Rm{William Robotham - Chief Engineer}/Std.5/JH. 23rd. August, 1938. Messrs. Lawrence Scott & Electromotors Ltd., Gothic Works, Norwich. Dear Sirs, We have in use here one of your D.C. electric motors 250.V. 100.A. 30BHP, R.P.M. 2500-4500 compound winding. The machine is a 1936 one, No.72222. We would be grateful if you could let us have characteristic curves showing the electric mechanical efficiency at varying load and speeds. We would like this information at your earliest convenience. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||