I have a Sig 1/4 scale Cub and it has a Super Tigre 2000. This is a 1.2 cu glow 2-stroke engine. Plenty of power- flies very scale-like at 1/2 throttle. Big 2-strokes like this sure drink the fuel though! I think if I had built this plane I would have put in a small gasser, like a Zenoah G-23. Much cheaper to run!