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 Smiths dynamo output under cold conditions.
| Identifier | ExFiles\Box 3\5\ 05-page253 | |
| Date | 21th May 1920 | |
| RR 500 (12/20) (SP{Mr Spinney} 249-3-19) MP 20015 X-295 90970 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr. Clark. Order No: — Customer's No.: 76H.O. Re: X 295 2D1 & 2D2 Smiths dynamo. 2D(I) output Cold Condition 18° C. Speed | Amperes | Volts 455 | 0 | 12.20 490 | 1.85 | 12.30 535 | 4.40 | 12.55 570 | 5.60 | 12.85 650 | 8.45 | 13.60 710 | 9.85 | 14.10 760 | 11.30 | 14.35 830 | 12.00 | 14.80 Septa 960 | 12.30 | 14.95 1200 | 13.10 | 15.15 1450 | 12.70 | 15.15 1700 | 11.95 | 15.10 1860 | 11.60 | 15.05 1920 | 11.60 | 15.05 2060 | 11.20 | 15.05 465 | 0 | 12.6. Signed: PM This Sheet must be filed on completion of the work. | ||