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 procedure for a longitudinal motion system involving motor engagement and load application.
| Identifier | ExFiles\Box 168a\2\ img035 | |
| Date | 20th March 1931 guessed | |
| -4- (7) LONGITUDINAL MOTION TEST. (8) For this test together with Nos. (9), (10), (11) and (12), a system as represented in the diagram on the previous page has been agreed upon, there being two small capacity switches S1 and S2 and an electro-magnetically operated switch LMS. There will also be a teazer end main current ammeter A and motor terminal voltmeter V, whose positive terminal is connected as required to the teazer or main motor terminals. S1 switches on the motor teazer circuit, then when a full engagement has taken place, S2 will provide for the application of the main current. Alternatively immediate application of the main current is obtainable on nearly full engagement, if S2 is on before S1 is operated. The motor is to be arranged mechanically for the next tests so that engagement can take place with a wheel (speed ratio 15 5/8 : 1) representing the flywheel of an engine, connected to a brake drum for applying the necessary load. Clamp or load up the drum so that it will be unable to turn under the action of the teazer current in the motor. Now apply a voltage of 9.0 - .1 to the teazer terminal of the motor. Repeat this several times for each of several positions of the brake wheel taken | ||