RE: OV-10 Bronco 52" 3-Blade Prop Size?
Well, I tried a maiden flight today, but turned out to be a "maiden taxi run." Those MDS .28's just don't have what it takes to get the bird in the air. Tried several times, changed props to 9 x 5's, and it couldn't muster up the speed to break ground. I had to plead with those MDS engines to even break 12,000rpm with 9x5's. They just aren't getting it. I feel sure that OS .25FX would do it, and the .32's for sure. Guess theres another day in store for this one. The OS .25's on my C-130 have no trouble turning 15,000 with 9 x 5's. I' m sure an extra 3k would be enough. Small wheels don't help either, but the grass is short. On the bright side, it ground handles really well!!
Randy