You obtain a set of points, condenser and coil from an old car built
from 1925 through about 1970 or 80.

Those old steel can ignition coils were filled with oil to cool the
primary coil inside the can.

Oil transfered heat much better than plastic used in
recent GM Truck coils. They were designed to survive with the
points closed all the time in case you left the ignition key on.

A ballast resistor would be a good idea. There is only one
bump on the rotor shaft because a one rotor fires only once
per rev.

Pep Boys sells the old style coils for about $20 new.

NO distributor!!!! Not needed. No distributer cap. Not needed.
No ignition rotor. Not needed.

One coil per spark plug.

Use two sets of points if you use two coils. It will run on
either one. Fixed 22 degrees BTDC timing.

Make the points bracket out of Home Depot aluminum bar stock.
Make the points cam out off a short piece steel square rod. Grind off
three of the four corners. Weld it to the steel disk and bolt that to the
front pulley.  The pulley  already has four taped holes. You can slot
the holes in the disk to adjust the timing.

This is a reflection of the extreme simplicity of a Wankel engine.

This is almost as simple as the Wright Brothers ignition.
They had a set of points inside each combustion chamber.
When the points opened they sparked.

Dave, You can show this at Oz-Kosh if you want.

Paul Lamar

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