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 detailing the effect on output by varying the control brush position on a Lucas E575 Dynamo.
| Identifier | ExFiles\Box 36\4\ scan 024 | |
| Date | 11th June 1920 | |
| RR.300 (120B) (SF 349 24-1-19) MP 200552 X.3014b 90932 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark. Customer's No.: F.B.7. Re: Effect on output by varying position of Control brush on Lucas E575 Dynamo. Hot. Position | Amount of Advance & Retard | Speed | Output Normal | - | 2000 | 12.10 Advanced | .3" | 2000 | 13.80 Retard | .3" | 2000 | 10.80 Advance. moving brush in direction of rotation Retard moving brush against rotation. Signed: [Signature] This Sheet must be filed on completion of the work. | ||