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 for a Bleriot-Phi Cut-out regarding battery connection, voltage, and current measurements.
| Identifier | ExFiles\Box 48\3\ Scan181 | |
| Date | 24th January 1919 | |
| RR. 300 (120B) (SF 349 24-1-19) MP 200552 88269 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 2 Re Bleriot-Phi Cut-out (Contd) With the battery connected up only 7.0 ohms can be inserted as the drop of volts down to that of the battery on cutting in is not sufficiently compensated by the flow of current in the series coil, otherwise. Volts to cut out 13.52 Amps " " " (shunt coil) .098 Ohms 138.0 Series amperes +.25. Slightly higher resistances could be used, if the voltage were perfectly steady. Insts Volts 40. 15.0 range Sh. amp 92.1.5 range Se amps 78. 15.0 range Signed Francis J Allen This Sheet must be filed on completion of the work. | ||