If I was working on it, first I would want a 5/16" air gap consistent spark minimum from the coil terminal to ground. The spark is fine on this coil, keep in mind the faster you turn a mag, the better the spark. 0000002409 00000 n Franaise Our preferred gap for spark testing in fresh air is 6 mm. At atmospheric pressure, the voltage required to strike a spark across the 0.020 (0.5 mm) gap of a sparking plug is far less than the voltage required at the elevated pressure that the plug experiences in the engines cylinder. (Chinese) Measure the resistance between the magneto body and terminal in the plug cap. Learn how and when to remove this template message, https://en.wikipedia.org/w/index.php?title=Ignition_magneto&oldid=1150712364, Short description is different from Wikidata, Articles with unsourced statements from January 2023, Articles needing additional references from January 2023, All articles needing additional references, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 19 April 2023, at 18:38. 0000002602 00000 n Nederlandse read more deeply). A good Wico X series mag will jump at least 3/8" air gap. Free access to service and repair Really need a coil tester. long practical experience of working on magnetos and If your magneto does not have an EasyCap but it fitted with a condenser buried in the armature, then it is impossible to check the condition of the condenser, while the armature is assembled, without specialised equipment. AJS and Matchless Owners Club Limited | Print Article - Jampot I was hoping that some of the experts might help me with a magneto problem. have a small choice of reconditioned Magneto services Since the beginning of World War I in 1914, magneto-equipped aircraft engines have typically been dual-plugged, whereby each cylinder has two spark plugs, with each plug having a separate magneto system. If it is several thousand ohms, it indicates that the HT lead is resistive and/or the plug cap is fitted with a suppressor resistor. We would recommend having the transformer coil rewound as modern class F or H wires and insulations are superior to the ones used at the time it was originally made and would almost certainly give you another 40 years of good service.
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