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).
Insulation test results for six starter solenoid coils.
| Identifier | ExFiles\Box 64\3\ scan0141 | |
| Date | 22th May 1924 | |
| RR 238 (150 BKS.) (SH57.29-5-20.) MP 224358 X. 8650 ROLLS-ROYCE LTD. INSTRUCTIONS. May 22nd 1924. To: FFC Order No. PC 68 Customer's No. X 8650. Insulation Test of Starter Solenoid Coils. The results of the insulation test on six of the above coils, are as below. In each case the test finally consisted of 100 volts being applied between the winding and the metal bobbin through the Weston Galvanometer. Coil | Insulation Resistance. No 1.. | 964,000 ω. " 2.. | Infinity. " 3.. | " " 4.. | 503,000.ω. " 5.. | Infinity. " 6.. | " Coil number 6 is the one that was rebaked in the shop. Signed C.A.P. This Sheet must be filed on completion of the work | ||