I have flown the VPP a few times and set the BL-12 speed control many different ways. So far my conclusion is this. If you are flying with the prop at a fixed 60 % of pitch, it works fine. If you start moving the prop, and get it over 60 %, it over powers the motor and slows it down. I called tower and they passed me to great planes tech dept which was about as worthless as you could get. He knew less about it than I did. I have quite a few flights on the turmoil now and as long as I keep the prop pitch less than 60%, it works fine, but will not stop in a vertical descent. It will hover nose down if you start from zero airspeed. The pushrods don't take the vibration well and break which can cause problems with control. I got lucky and got it down though.

So far, its a neat toy, but the motor that comes with it is way underpowered and will not do what they advertise. Don't expect help from them, from what I can get, they haven't done much with it. It seems like a hurry and get it on the market product and they didn't do enough testing. I will probably try some other brands to see if they have more power. The concept is cool as heck, I just haven't been able to get this one to perform as advertised.