It has been awhile..
At BenzWorld I had started a thread about a retrofit Capacitor Discharge Ignition without distributor. This was based on inexpensive CDI modules for ATV and such. The ignition coil pack comes out of a Ford F150 V6 pickup.
Bought an extra CDI module to reverse engineer and destructive test.
Then I tested it with the Ford triple ignition coil setup. That is on one coil (of the three). In the picture it is running at 3600 rpm camshaft so 7200 rpm crankshaft. ( spark plugs left bottom)
I milled the bottom out of the potted CDI box so that I could see the backside of the PCB and reconstruct the schematic. With a Dremel I got access to a couple of critical solder joints to take measurements. With a small modification this now runs on 24 volt directly... Tested for an hour at 32 volt and 7200 RPM.
![IMG_20200616_171630_014.jpg IMG_20200616_171630_014.jpg](https://www.steelsoldiers.com/data/attachments/558/558720-d2c40a8b336786ab53e174f0dee8426f.jpg)
Then from an old photocopier I had some optical gates. By chance three. So that worked out. In the scrap bin was an aluminum ring that I modified to hold the three optical sensors.
Instead of going with another distributor I figured to use the old one and leave the points and all in place so that I can switch back to all original in a couple of minutes..... and of course save cost.
The next part is making the vane that actuates the three optical sensors and doing an actual test.
This is of course all proof of concept.
Johan