Serge, Send the pics to me and I'll post them. ke4lom (at) ctc (dot) net Scott Stanton Raleigh NC
Serge VIDAL wrote: >Here are some quick answers to your questions. I hope I use the right >terms. I only have practical knowledge of the system, so just tell me if I >am unclear. > >1 - Components >One complete set of these electronic ignition consists of: >- One tiny mechanical assembly (which I will call a finger). It is rigged >to the crankshaft; its function is to give the timing, and it is spring >loaded to cater for advance/retard variation at start-up; >- Two tiny magnetic sensors (with two wires each); these are rigged to the >engine block, with a bracket, and are placed around the crankshaft, >(around the finger). They are horizontally opposed (180°). When the finger >passes by, they trigger. >- Two "relays" (with five wires each) The function of these is to open and >close the power supply to the coils, when the magnetic sensors tell them >to. >- Two coils . Note that these coils have two spark plugs lead each. >- Four spark plugs. >I haven't opened the magnetic sensors housings, nor the relays housings. >But considering that the magnetic housings are half the size of a matchbox >and the relays the size of a matchbox, there can't be too many components >in them. > >3 - Crankshaft attachment >The mechanical assembly is bolted to the crankshaft. The magnetic sensors >are rigged to a plate, which is attached to the engine block through a >bracket with long legs. > >4 - Timing pickup >I already answered that, but I should elaborate a little bit more. The >solid rigging ensures precise timing. Once you are happy with the timing, >you tighten the bolts, and the timing stays like that forever. Only at >start-up, the advance is less, to prevent kick-back. Then the engine >starts, and the centrifugal force makes the finger fight its spring, and >it assumes correct timing position. >Every half turn of the crankshaft, one of the two magnetic sensors closes >the relay, and as a consequence, two spark plugs fire. One fires at the >right timing (ignition), the other fires at the wrong timing (exhaust >phase). So, only one serves a purpose, but the system is made more simple > > >6 - They come straight from.......; What make and model cycle >Honda CB series, circa 1980 or so. I am not 100% sure. When I decided to >expand the system, I took my parts to a bike junkyard, and asked them to >give me the same ones. There were many look-alikes to choose from, because >most Japanese 4-cylinder bikes of that time used the same set-up. > >Lastly I would ask if you have any pictures of this setup posted on a page > >anywhere. > >Sorry, I haven't got a Web site. Any volunteers, step forward. > >Serge Vidal >_______________________________________ >Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp >to UNsubscribe from KRnet, send a message to [email protected] >please see other KRnet info at http://www.krnet.org/info.html > > >
