Engine test in the backyard

The Synergy is now ready for take-off. I tested the relatively old OS 140Rx today. It started right away. It is equipped with a Hatori 900 pipe. I did not have the chance to run the engine for more than a couple of minutes, but so far - so good. I am going to use a APC 18x10 sport propeller. The all-up weight ended up being 4650 grams. Not bad at all.