11x7 is kinda big for a .46, a 11x5 or 11x6 would be the best, the 11x7 will be slower as the engine will not rev as high as with a 11x5 or 6 and has the possiblility of overheating that engine. I personally use a 12x4 on my .46's but for a trainer style plane i'd go the 11x5 or a 11.5x5.