Pulleys for distributor-less crank fired ignition

[JSmythe]

Use the dizzy gear or Cam to run a 72-2 trigger wheel. Some of those pictured are from an RX-7. You can get them at McMaster Car for $40

[cygnus x-1]

I've wondered about whether a 72-2 wheel would work when run off the cam. For something like that though I might be inclined to go with an optical encoder (with index pulse) instead of a VR trigger. Optical encoders are fairly cheap now and can be more compact.

C|