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Thread: Ignition systems.
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16th December 2020, 08:47 PM #1SENIOR MEMBER
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Ignition systems.
Cranked up the new mill for its first job today: A single point cam. Tuned down a bit of round stock to 18mm on the lathe, bored an 8mm hole through the centre, milled a couple of flats 180 degrees apart on the mill, filed the edges round for a smooth ramp, mounted it on the lathe again and cut a 2mm keyway, then polished it up. After finishing I mounted it on the bike and did a static time, as it turned out, backing points plate is dead centre in the mounting screws, so plenty of leeway for timing with a light. Next project, an electronic ignition. I have all the parts so I'll assemble on a breadboard to check. Couldn't find a 100PF electrolytic so replaced that with a ceramic. If it works I'll make a printed circuit board, mill an aluminium box for the parts, then mill a magnetic rotor and make a second circuit board for the hall effect sensor. I've decided to mount the hall effect sensor behind the points cover and run two leads to the aluminium heat sink box containing the other bits and mount it on the frame next to the coil. This'll give me three ignition systems to choose from: Twin points and single point systems and an electronic system. Why so many? Well, they say you can never have too many bikes, I don't have the room nor enough time left for multiple bikes, so, I limit myself to multiple systems. Whilst I have buckets of experience with designing and wiring up electrical systems, but, my electronics experience is limited to just a few simple projects: Digital voltmeters and what not, so, it'll be interesting to see if this electronic system I cobble together will actually work. Last pic is of the original twin points system.
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