RCGF Stinger 10cc in a Seagull FunFly 3D, Seagull models are sturdy but on the heavy Still it hoovers and goes vertical but slow on a 14x6. Impressive for such a small engine. Stock iridium spark plug and RCXL ignition, easy to start, low smooth idle and fast throttle response.
I now have 9 of these RCGF´s and I´m impressed. No reason for me as hobbyist to buy anything more expensive.
