this is 'version 2' of my 2013 ParkZone VisionAire. i own a real VisionAire and this flys very realistically. my 'VisionAire Doppelganger' varient is loosely based on the MultiPlex Acro Master, but i have increased the weight and reworked all the dimensions and airfoils to match the real VisionAire. i also created a new motor the BL10 (1250kv) and matched the prop with a 12x4. the graphics are from photos of my actual plane. in RF6.5 she will fly inverted with no input at 3/4 stick for 4 sec. this was QQ recommendation for finding the CG. since i think this model will work in RF 4 & 5 too, if you notice that is does not fly inverted as noted above, adjust your CG in small increments until it does. enjoy and thanks QQ and ParkZone, this is one sweet bird and such a joy to fly and learn 3D on.