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).
Modification of stalling test procedures for the new Peregrine starter motor.
| Identifier | ExFiles\Box 62\1\ scan0073 | |
| Date | 29th October 1932 | |
| X6134 Hs{Lord Ernest Hives - Chair}/Wst. from E.{Mr Elliott - Chief Engineer} E.4/HP.29.10.32. c. Hs.{Lord Ernest Hives - Chair} By.{R.W. Bailey - Chief Engineer} By/RD. New Peregrine Starter Motor. In connection with modified armature working at much higher current density in the armature conductors, we understand that a reduction in the time of the standard stalling test is contemplated from 5 minutes to 1 minute, and that it is necessary with the high temperature reached by this new experimental armature to test with the brush cover removed, and with extra cooling provided by a fan. We feel that we ought not to attempt too much in departing from standard practice relating to our own and other makes of starter motors, and before reducing the severity of our production tests we should like to know if the Bosch and other makes of starter motor are incapable of passing these tests. E.{Mr Elliott - Chief Engineer} | ||