I have installed the electronic BTH magneto, the one that sparks with the two little coils and the electronic advance/retard mechanism. I'm super happy with this instrument in deed. My machine is a HRD Rapide Series B '49.
Testing the mag in the vice it sparks like hell at lowest revs but once installed at the flange were it is supposed to be fixed it sparks weak and erratically. It even refuses to spark at all. Earthing the mag off the machine it sparks again as it should. Does anybody knows how this might be possible? The Mag is actually earthed together with the crankcase ???
Testing the mag in the vice it sparks like hell at lowest revs but once installed at the flange were it is supposed to be fixed it sparks weak and erratically. It even refuses to spark at all. Earthing the mag off the machine it sparks again as it should. Does anybody knows how this might be possible? The Mag is actually earthed together with the crankcase ???