Starting to rebuild the Allen distributor machine

OK, so this afternoon I got a very good start on replacing the tach trigger. I still haven't figured out how to add text between uploads, so the top photo is the original slip ring which breaks conduction of the brushes once or twice a shaft rev to operate the original tach circuit.

Below is what I'll replace it with ---a Mopar dist. setup. The shaft is out of a locked lean burn dist, and luckily the dist. machine shaft is 3/8" and I just HAPPEN to have a reamer that size!!!

Next, rough boring the original reluctor shaft, and below that, reaming it to size.

Next, we have machined off the bottom crimp, removed the lock tang, and faced the bottom of the shaft.

The next photo just shows rough progress against an original advance assy.

Next we see the nearly finished shaft. It has been shortened off the top, the reluctor will be installed upside down for more clearance, and the bottom has been counterbored to clear the bearing bore protrusion on the machine shaft, to allow it to sit lower.

Next we see it sitting on the shaft as it would be installed, all I need now is a couple of set screw holes drilled and tapped

Next we see the reluctor on the machine's shaft from below, with the original strobe wheel as it will install on top. The slip ring you see above conducts spark energy to the flash tubes, to operate the strobe for timing and advance