I just made 3 flights on my Outsider twin with 8-9 degrees out thrust on each engine. The idea behind the project was something I read 15-20 years ago that if you use 8-9 degrees out thrust on twin engines, you will have very little, if any, yaw from an engine out. I guess I should ask if anyone else has tried this.

Plane: Goldberg Tiger 2 ARF, 61" span, 680 sq in area
Engines: 2 OS .46AX with APC 11-6 props in nacelles added to wing. Ernst thrust plates behind each engine mount to adjust out thrust.
Weight 8 lbs 15 oz.

1st Flight on 2 engines: Excellent. Fast and still aerobatic even with the additional weight. Landing good, but fast.

2nd flight: The plan was to take off on 2 engines, shut one down and check the yaw and flight characteristics on 1 engine at full power. Even though I am using 2 channels, I could not get the right OS to shut down in the air. The plane handles well with 1 engine at idle and the other at full power. This is probably the worst case since the full prop disc is causing drag. This configuration did require some rudder. On landing, the right engine quit. (About time, I thought.)

3rd flight: Well, I had one engine running and my buddies were asking for a try so I lined up and gave it full power. Lots of left rudder needed on take off roll. That's different. Take off roll was nearly double, but since we have several thousand feet of hard surface I wasn't worried. After lift off, I made a slight right turn. The wind direction was causing me to have to make turns into the bad engine for a pattern. This is normally the worst case, so it would be an additional test to see how the plane handled. I had been holding a little rudder, but after I circled back and lined up with the runway, I released all of it. There was a little yaw, but not much. There was some cross wind so this could have caused the yaw. I was still at full power on the running OS AX and the plane was handling good.

I circled a couple more times and tried a few rolls. Rolls toward the good engine, left rolls had about the same roll rate as with 2 engines. Rolls toward the bad engine, right rolls were faster! There was at no time any hint of uncontrollability.

I made a right hand pattern, again, toward the bad engine, flew a fairly fast final approach and touched down fast with a bounce. The plane seemed to have more of a sink rate on 1 engine.

If the weather cooporates, I'll get some more flights next weekend. I'll also take the Twin Air out and compare the 2 with an engine out. Just from a few flights, I like the out thrust. It didn't seem to affect the speed, although I can't say for sure, but the plane was fast enough for me. The handling with the right engine out was excellent, considering I took off, made turns into the bad engine, rolled both directions and made a landing pattern with turns into the bad engine, all without a hitch.