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).
Test results for a Bleriot-Phi cut-out under cold and hot operating conditions.
| Identifier | ExFiles\Box 48\3\ Scan179 | |
| Date | 24th January 1919 | |
| RR. 300 /120B) (SF 349 24-1-19) MP 200552 88265 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. 2 Re. Bleriot - Phi Cut-out (cont) Operation, Battery on. Cold | Hot Volts to cut out. | 12.4 | 12.87 Amperes to " " | .1025 | .1025 Ohms | 121.0 | 125.5 Reverse amperes in series coil | .45 | .20 For the hot condition the cut-out was used for charging a 12 volt battery at 10 amperes for 2 hours. Instruments. Volts No 40 15.0 Orange. Shunt Amps " 92 1.5 " Main " " 98 15.0 " Signed: Francis J Allen This Sheet must be filed on completion of the work. | ||