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 procedures for Teazer Torque and Main Load on a motor.
| Identifier | ExFiles\Box 62\1\ scan0186 | |
| Date | 24th October 1933 guessed | |
| -5- (8) TEAZER TORQUE TEST. A light brake shall be placed upon the brake drum and a potential of 10.0 ± .1 volts shall be applied to the motor teazer terminal. The motor pinion will then engage the wheel and according to the magnitude of the brake will turn or not turn the wheel. The brake shall now be adjusted until the motor will turn the wheel as slowly as possible but continuously without stopping. Allow the motor to do this for 5 minutes, and during the last minute observe the brake torque, which torque should exceed 20 lbs-ins, if the motor has satisfactorily passed tests (4) and (6) and has a good magnetic circuit in the in gear position. At the same time the teazer current (indicated by A) should lie between the limits 13.0 and 15.0 amperes. (9) MAIN LOAD TEST. It is assumed in this test that the motor has previously satisfactorily passed the light test. A brake load shall be applied to the wheel and the teazer circuit switched on to obtain engagement before operating the main switch. The breake torque shall then be suitably adjusted until the main motor current is 150 ± 1 amperes in which condition the motor shall be run for 5 minutes. Switch off the teazer when engagement has been effected. | ||