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).
Tests for static induction effects on ignition wires enclosed in a metal tube.
| Identifier | ExFiles\Box 61b\4\ scan0209 | |
| Date | 19th February 1925 | |
| EFC. WA.{Mr Wallis}110. 19.2.25. TESTS FOR STATIC INDUCTION EFFECTS WITH METAL TUBE. Further to WA.{Mr Wallis}109 tests have been carried out with the battery and magneto ignition wires enclosed in a metal tube, an exact replica in iron of the black fibre EAC.tube. Tests were made firstly with the tube earth insulated, and secondly with the tube earthed, the procedure being exactly the same as stated in WA.{Mr Wallis}109. I. Tube insulated from earth. With the magneto sparking the sparks obtained at the battery wire terminals were :- No. Spark Lengths 1 .015" 2 .025" 3 .035" } INDUCED SPARKS 4 .035" } ON B.I. GAPS. 5 .035" } (INSd. METAL TUBE). 6 .045" and with the battery wires sparking and the magneto wires idle the maximum lengths of regular induced sparks at the terminals of the magneto wires were as follows :- No. Spark Length. 1 .030" 2 .025" 3 .025" } INDUCED SPARKS ON 4 .025" } M.I. GAPS. 5 .020" } (INSd. METAL TUBE). 6 .015" Contd. | ||