Originally Posted by Avistarpilot
Thanks for the tip, I'll take 2 of the gear mount bolts out. Hope to get it out this week weather permitting. Fall is here and it's been very windy most of last week and this weekend.
Avistar Pilot, lots of info your way. Your machine looks like the old Avistar which was a bit better than the new breed. In any case I have trained a number of RC pilot wanna'bees and even some that are fair RC pilots that like to fly Trainers. I. myself, do so every now and then just for Sport.
Regardless of airfoil, any airplane can be "tip-stalled" if conditions and situations set up, said conditions - situations which are mostly set up by the pilot. If you have a chance go to an airport and especially so take a look at air-transport airplanes from a good distance behind the machine. You will see that the wing next to the fuselage has a strong setting almost
like a Clark-Y. The trailing edge can be noted that it becomes very close, if not actually, a symmetrical airfoil out by the tips. Therein you see the washout that real airplanes live by.
A flat bottom wing is a sucker for tip stall when the pilot moves the ailerons. That aileron going down is a sure bet if the speed is still slow and the angle of attack is high (taking off, landing and slow, etc.) A few months ago I was helping a modeler. He had flown some years ago. We were working with an Avistar Elite
. He kept having problems with turns, especially to the left. I asked him if I could make some adjustment. I rolled up the ailerons by about 4 degrees. No more problems. Smooth turns, landings were straight approaches and take-offs straight. In-flight maneuvers were smooth. The old times came right back. Was it the adjustments?
I have saved a number of Big Scale Pilots with that simple little thing, washout of the ailerons. Strip ailerons
, then cut the tips off a few inches and GLUE them back slightly up. Be sure to slip another hinge (any type) into the end of the working aileron. Good luck. I am not an aeronautical engineer. My son is. OTOH some 41 years, military and airline with 20,000+/- hours, I did learn a few things. The fun of checking man-carrying machines gave one a good chance to learn more for modeling.