This is so cool. If you're unfamiliar, the Rotec R3600 is a newly manufactured 150hp radial aircraft engine. It's been around a few years, but most recently I saw it on the new Luscombe-Silvaire Phantom, which is an LSA-compliant modern homage to the Model 4.

Building Rotecs:

I have personally seen these engines and I think they are a work of art. Absolutely gergous engines. The machine work is similar to the Jabiru. The only thing about the engine that is strange to me is that it does not sound like an old radil...it runs at much higher RPM.
WW

Thanks for sharing Z. I want one to hang in my basement. That Silvaire is such a classy little plane.