Gidday all, I have posted a short clip inside one of the cylinders of the Bristol Hercules that I am restoring. Look up Bristol Hercules Sleeve Valve on Youtube - it won't be hard to find.
Yeah the automotive coil system would work fine. Booster coils are quite common but a home made one would be just as good. Yak-52 or Nanchang CJ-6 aircraft have a small and simple booster coil that ...