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).
Performance test report for the Goshawk dynamo against General Specification X294.
| Identifier | ExFiles\Box 51\1\ Scan118 | |
| Date | 4th January 1922 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. X.4383 To: EFR Order No: AB. 62. Customer's No: 1 4 Jan 1922 X4383. Performance of RR Goshawk Dynamos on General Specification X294. The laboratory experimental Goshawk dynamos and machine No 43 (from production) were tested last month for compliance with the general specification for Goshawk dynamos. No 43 machine, after four hours run at maximum output attained a steady temperature of 64°C (ambient temp=18°C). The open-circuit voltage of the machine then at 640 rpm was 12.75v, the speed for 13.6 volts being 665 rpm. Operating on a battery (adjusted to the hot characteristic) the output rose to a maximum of 10.5 amperes. (Cont'd) Signed This Sheet must be filed on completion of the work. | ||