I have a Weedeater Featherlite 25cc on a Balsa USA Stingray 120. It has OVER 80, 10 minute or more, flights on this engine. Enough power to fly the stingray and do all the usual maneuvers. It has the stock carb with a velosity stack and CH ignition. 6800 rpm with a 16x8 prop. Next project is a 36cc Poulan chainsaw conversion.
BBBrown