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 coil temperature tests under abnormal conditions.
| Identifier | ExFiles\Box 69\1\ scan0232 | |
| Date | 10th October 1929 | |
| RR 239 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12-24) MP 306975 X.8710. ROLLS-ROYCE LTD. INSTRUCTIONS. To E.7.C. Order No. WD{Mr Wood/Mr Whitehead}80 Customer's No. X 8710 Date: 10-10-1929 Coil temperature tests on standard 22 SWG primary coil NO R-4-MX.{John H Maddocks - Chief Proving Officer} We have now completed two tests on a representative standard coil to ascertain the maximum working temperature under extremely abnormal conditions, although likely conditions. Test 1 consisted of running the coil, connected up to a distributor in the normal way but under the following conditions:- (a) Volts across the system - 18.0. (b) Distributor make ratio - .750. (c) Ballast of 1 1/2 value (d) Ambient temperature - 100°C (e) Distributor speed - 500 r.p.m. Signed (Contd) This Sheet must be filed on completion of the work. | ||