HI Phil,
That was my Ringmaster, but the engine was the SS30, not the SS25. All up weight was 26 ounces. I built a new tank that is larger and if I top it off, it now runs almost 10 minutes in our thinner air in the foothills west of Denver (about 6000 feet elevation). The SS30 has become one of my favorite engines. Very easy to start, plenty of power and consistently good engine runs...and of course, the legendary reputation Enyas have of lasting a long time.
Chris