RE: Tip stalls..... any fixes?
This discussion is timely because one of our local modelers showed me an .25 sized EXTRA that he had framed up from RCM plans. We both, from past bad experience with highly tapered and fairly hefty craft think it is a snap roll on final waiting to happen. I offered to redo the wing for him. I've also got him sold on using mini on board gear, which if you add it all up is a significant weight reduction, and I will make a CA / FG cowl from 4 layers of 1 oz cloth, which is somewhat lighter than FG and resin. The control surfaces will be done with SPIDERLINE, except for the ailerons which will be 2-56 rods, with CF tube slid over them. He has been working on CF gear for it, if he can't come up with something there, there are commercial CF gear suppliers out there. You can build light, but it takes effort. The quick way is usually the heavy way.