In the same vein ot side thrust, I have been experimenting with using out thrust on twin engine airplanes to counter yaw in an engine out condition. I am using 8 degrees out of both engines. Cos 8 = .99 so I am still getting 99% of forward thrust, but I am getting 14% side thrust.

The test plane, a Goldberg Tiger 2 converted to a twin with 2 OS .46AX engines weighs 9.5 lbs and has a 32 oz/sq ft wing loading, pretty heavy. I have taken off on 1 engine and alternately fueled each tank 1/3rd full and flown at full power, doing maneuvers until the engine on the low tank quit. The plane handles well on 1 engine, turns either direction, rolls and loops, although going over the top is slow and it does yaw there.

As a second test, I pulled the OS engines and replaced them with a Thunder Tiger .46Pro with a Tower muffler on the left and a Thunder Tiger .42GP on the right. There's an unsynched pair for you. Still flies well. Can't seem to tell much difference in handling, although with the 2 OS AXs, it had more power. The OSs are in another twin and this one is still flying with the mismatched pair. I am so convinced about out thrust that all my new twins get out thrust.

8 degrees looks huge, but as an engineer, I go with what works.

I used Ernst thrust plates bought at Tower for the side thrust. They come in a package of 3 deg, 2 deg, & 1 deg for $2.95 or so. Takes me 3 sets.