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 continued tests on a coil, including temperature and leakage effect analysis.
| Identifier | ExFiles\Box 69\1\ scan0114 | |
| Date | 8th December 1924 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 481-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. (2) To_____________________19___ Order No. WC114 (contd) Customer's No._____________ 1 1/2 hours left on contact at 12 volts. A std double ballast resistance was used in series in each case. b) Tests in an electric oven at various temperatures, the coil being screwed down to an earthed metal plate to approximate engine conditions. These tests consisted of raising the coil (connected up to a distributor as in (a)) to different temperatures up to 100°C and observing the max gap which could be inserted in series with the main H.T. supply without causing irregular firing of the distributor on 5.5 mm three point gaps. c) Direct leakage effects on the coil performance by placing an earthed Signed (contd) This Sheet must be filed on completion of the work. | ||