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).
Instruction sheet detailing the examination of two faulty customer coils, identifying short circuits in the secondary winding.
| Identifier | ExFiles\Box 69\1\ scan0272 | |
| Date | 12th December 1929 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8.12.24) MP 306975 X8710 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.T.C. Date 12-12-1929 Order No. WD{Mr Wood/Mr Whitehead}101 Customer's No. X8710 Faulty customer's coils. We have unwound the following two coils Nos NQ95 and VI85 handed to us for examination and after having confirmed the fault in each case to be due to a short circuit on the secondary winding we found the evidence as follows:- NQ95 - Break down at the end of the 2ND layer close to flexible connection to primary. VI85 - Break down at the end of 2ND layer. Primary flexible connection found well underneath the 2ND layer causing the layer of paper Signed (contd) This Sheet must be filed on completion of the work. | ||