Hi guys,
I have a Sig Somethin Extra with an OS 70 Surpass and I have encountered a weird phenomenon when attempting TR's. Sometimes when I start a hover this plane torques hard and fast to the RIGHT. It seems to happen if I put the throttle up slowly. The only thing I can figure is the spiral slipstream is twisting the wings, ailerons, and tail feathers opposite the engine torque. It amazes me every time it happens. You would think that if the engine could create that force then the two torquing forces would cancel each other out.
This plane is 6lbs 3oz which I know is heavy, but that OS 70 pulls it out of hover albeit slowly. One other thing I've noticed is that when I used an APC 13 x 6 prop I had great hover thrust, but it would hardly start the torque roll. I changed to a 12 x 8 APC and now it torques hard to the left, usually. I'm still working on a complete TR IRL, I can torque indefinitely in the sim now. I think my flying skills have surpassed the aircraft capabilities. I enlarged the rudder, and am planning to enlarge the elevators but I think that unless I can drop a pound or two off this plane I'm swimming upstream.
Has anyone seen the torque to the right?
-Tom