A pensioner has asked me about possiblity of rewinding some of these magneto coils. [URL]http://home.graffiti.net/diverse:graffiti.net/K2F.jpg[/URL] laying on cm/mm graph paper. Orangey section is the laquered coil. C area is the contact patch (supplying 2 HT leads in turn) moulded into the surrounding paxolin? insulation, continued out to the boss marked P, but otherwise looking like the tarnished brass sections in colour , marked B. The curve above the C is the shape of one end of this contact section, not a trick of the light. A is aluminium housing for the contact breaker First comment is he has 5 of these , all not working at all or properly, so probably not good design anyway, as none were abused in use. He has one good magneto , he moves around 3 bikes. He can get some or all nonworkers commercially reconditioned , at a price each. But of course he would like all 5 rewound and he knows, like me , that having researched and set-up for one then the following 4 rewinds are much easier. I use a coil-winder machine but little experience of these sorts of coils. No electrical data found on the net for these. As received by me, the secondary measured 22K ohm, now reads 6.3K , at this stage, presumably shorted turns rather than a break for this one. He has some sort of technical data for these , when he can find it, but first thing is how to (after desolding) slide the laquered-in coil out of the central section between the 2 steel pole pieces marked S, and because of the boss marked P that holds the HT wire lead out, coil would have to be removed from the other open section, underneath in pic. Anyone know the number of turns, wire gauge to save having to count off ? and details of interlayer insulation (if any). How is the HT coil output removed from the boss P or whereabouts is the join to a feedthrough under the output laquer?
