I'm considering something like this in the future, but I thought I'd see if anyone else had tried something familiar before. What is the correct timing for a stock Cb77?
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1965 Honda CP77 — Ulsan Metro City, Rep. Korea
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Anyone ever thought about making an electronic ignition?
Anyone ever thought about making an electronic ignition?
In the VW scene, we used a little part called the Compufire in place of points. It was a little magnet induced points and condenser replacement that bolted in place of the points and came with a little magnet wheel instead of a rotor. I would think that two of them could be used on a special plate to fire the plugs. The plate would have to be made or possibly be made out of a stock points plate. The other thing that would have to be fabricated would be the magnet wheel.
I'm considering something like this in the future, but I thought I'd see if anyone else had tried something familiar before. What is the correct timing for a stock Cb77?
I'm considering something like this in the future, but I thought I'd see if anyone else had tried something familiar before. What is the correct timing for a stock Cb77?
I saw that, but I really enjoy trying new stuff and saving some money. I can get two of these for under $70 and I should have most of the materials to build the plate and disc in the garage. So, feasibly I could make the entire system for under $80. It doesn't require an electronics box, it just hooks directly to the coils. When the magnet passes over the module, it fires the coil. Fairly simple design.Sascha wrote:They sell electronic ignitions on the site...
-Sascha
Last edited by 56_oval on Fri Dec 03, 2010 2:13 am, edited 1 time in total.
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cyclon36
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Looking at the one that's available for now: http://www.honda305.com/ignition/
It doesn't seem as easy as you describe. I'll admit though I'm not an electronics guy. I'm all for simplicity though. If you can make something work that has less parts and is as reliable, I'd buy it. I'm sure others would too.
It doesn't seem as easy as you describe. I'll admit though I'm not an electronics guy. I'm all for simplicity though. If you can make something work that has less parts and is as reliable, I'd buy it. I'm sure others would too.
Well, I'll admit that I'm not familiar with the ignition system on the 305, but I can't see how it's any different than any other point system. When the contacts break, the coil fires. It's that simple. The device above just replaces the points and condenser and tell the coil to fire when the magnet passes over it. Now, if there is interference because of the electrics or the stator, then it might not work, but I think it is far enough away to prevent that.cyclon36 wrote:Looking at the one that's available for now: http://www.honda305.com/ignition/
It doesn't seem as easy as you describe. I'll admit though I'm not an electronics guy. I'm all for simplicity though. If you can make something work that has less parts and is as reliable, I'd buy it. I'm sure others would too.
I think when I have some extra cash, I might try it. The trick is to find a spot to mount each one so that when the magnet passes over it, it triggers it's coil.
Last edited by 56_oval on Thu Dec 02, 2010 8:45 pm, edited 1 time in total.
Check out this site. It's very informative with info on both points systems and electronic systems.Wilf wrote:I would be interested in knowing exactly how the passing of a magnet interrupts the primary coil voltage resulting in the firing of the plug. Somehow the passing magnetic field has to open the coil primary circuit--how is it done?
Wilf
http://www.jetav8r.com/Vision/Ignition/CDI.html