Instructions detailing the field circuit current and resistance for a Lucas E575 dynamo.
| Identifier | ExFiles\Box 36\4\ scan 168 | |
| Date | 17th November 1920 | |
| RR 388 (120B) (SF 349 24-1-19) MP 200552 X.30146. 91466 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: S.F.C. 17/11/20. Order No.: Customer's No.: F.C. 137. Re: X. 30146. Current in field Circuit of Lucas E575 dynamos A standard Lucas E575 dynamo when in a fully cold condition has a field resistance of 5.71 w i.e. when a 16 volt. battery is <strikethrough>appeared to</strikethrough> in series with the field <strikethrough>circuit</strikethrough> the current is 2.8 Amps. Signed: [Signature] This Sheet must be filed on completion of the work. | ||
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).