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).
Instructions detailing a fault investigation on a dynamo, noting incorrect brush angles and concluding the dynamo was at fault.
Identifier | ExFiles\Box 70\3\ scan0315 | |
Date | 17th September 1927 guessed | |
RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To______________ 19__ Order No. P D, 3. (2) Customer's No.______________ some sort had occurred. It was found, <strike>further</strike>, that the machine had a control brush angle of about 124°, which means that the <insert>normal</insert> output was probably lower than that of the late standard machine; the C angle of which was 122°. The insulation of the machine was OK Judging from these facts it appears most undoubtedly that this dynamo was originally at fault. Signed C.A.P. This Sheet must be filed on completion of the work. | ||