The last 32cc I did had the magneto ignition, and it turned a 16 x 8 prop at 8300, and an 18 x 8 at 7200. It has been a while since I ran the 36cc of mine, but if I remember right it turned the 18 x 8 at around 8000 rpms. Really very respectable power for a four stroke!!
Here's a couple of pics of my 36cc Four Mix. In these pics I had just set it up for test running without bothering with detailed cleaning and painting, etc. When actually done, it will be much prettier!
I've got a short video of the 32cc running but I can't post it. You have to do so via YouTube, and I don't want to get into that.
AV8TOR