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).
Instructions for a utility test on a standard battery ignition system with a standard chemical leak.
| Identifier | ExFiles\Box 54\3\ Scan259 | |
| Date | 4th June 1925 | |
| RR 238 (100 BKS.) (BHST 28-8-20.) MP 224388 X. 4645. ROLLS-ROYCE LTD. INSTRUCTIONS. To E.{Mr Elliott - Chief Engineer} Y. Co. Order No. WB{Mr Brazier/Mr Bell}17. Customer's No. X4645 Standard Battery ignition and standard chemical leak. (Utility test) This test consisted of observing the maximum speed of the contact breaker which would allow regular sparking to occur, on the annular gap shunted by the leak. A standard coil, ballast and distributor (make ratio .5) were used with a supply of 12 volts, one of the 6 H.T. wires being connected to the annular gap for the test and the remaining 5 discharged at 5, 6.5 mm gaps in air. Signed routd This Sheet must be filed on completion of the work. | ||