Ed...it is even easier than a twin..as long as any 2 of the engines stay running, assymetrical thrust is minimal......I've always thought that a triple would be a great training platfrom for multis.......It was the first flight for the new-to-me 2 stroke. It wasn't quite tuned right, and it went to sleep on the maiden flight. On the second flight, the pressure line slipped off the muffler on one of the .26's and it died...I never even noticed it til short final....
Rich, it sounds "busy"...if you know what I mean

. I have the center engine throttle hooked up to the slider lever at the side of the transmitter, so all kinds of weird things ar possible now... with the outboards throttled back, the center engine can maintain flight and even climb a little bit. with the center engine throttle back, the two little 26's have to be at full bore to over come the extra drag.... Anyways, by playing with the throttles, the sound can be changed in flight....