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 investigation into overheating and short-circuiting electrical coils.
| Identifier | ExFiles\Box 69\1\ scan0266 | |
| Date | 8th December 1924 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. (3) To____________________ 19___ Order No. WD{Mr Wood/Mr Whitehead}97 (contd) Customer's No.____________________ WH-65. ✓ We have also unwound two other coils with finer primaries and in each case the fault was due to bad overheating of the primary causing a secondary short circuit. We have asked for two more coils to be unwound, when they are available, to be able to say definitely whether the break downs are due to faulty winding or to undue electrical stresses. Signed H.E.W. This Sheet must be filed on completion of the work. | ||