So i did it. It struck me a few days ago, and i got rid of the double cam setup, and the complicated tubing and everything, and went for this. I liked how the camshaft turns so easily, and i like the simplicity. This engine ran effortlessly to 1040 rpms on the absolute first try. The version on these pics is a slightly modified version which should run a coupple of rpms more.
The reason i went for this is more power and a much smaller size. I think i succeeded in both, and also, the engine is more responsive. And another good thing, i need only 1 chain, and no chain tensioners. Just like it should be.