It's really too bad because once you get all of the weak points shored up, it really is a great flyer even in air and acro modes. Problem is, it's just too much work to keep props on this thing while in flight.
I tried cutdown and drilled 3 and 2 bladed hubsans aswell. This thing needs too much pre and afterflight work. I already botched mine as one of the propellers scraped some of the circuitry on the arms. It was my last testflight before i wanted to upgrade to regular topmounted motors i ordered specifically for it
I saw your review which made me try the tri-blades. They work the best out of any I've tried, but they still fly off. I still really want to fly this thing, but I gotta figure out how to keep props on it.
Very thin layer of glue. Or scrape the shafts of the motors a bit with some sanding paper for better grip.
Best bet is to replace the motors with topmounted ones, like i planned to do.