Not sure if it's been posted before but here's a beaut!

 

Man spinning in a field. Didn't get to see any manuvers. Doesn't even say what size engines and comments are turned off. Looks like it pulled quite hard.

Here's a link to a video of it flying taken from a drone.
The engines are Fora F2D engines (2.5cc) Dave Fischer and his brother built it and that's Dave flying it. 60ft. .027" lines. They have done 3 total; one with 3 engines, one with 5 engines and this one with 7