Hi
Just bench-ran my VVRC 40cc twin 'Classic'. Sucker popped on the first hit of the starter on choke, then roared to life on the first hit of the starter. Ran through 22 ounces in a single run at various throttle settings. SUPER smooth! Barely any noticeable vibration and 1700 idle. I'm excited to put this in the H-9 Cessna!