RC Kamov Ka 32 Scale Model Heavy Lift Turbine Helicopter Helicopter
via
Here we have a large radio-controlled model of a Kamov Ka-25K helicopter with two contrarotating sets of rotors, this model is an exceptional RC helicopter due to the sophistication of the Ka-25’s rotor design, most of the helicopters have a single rotor that rotates in one direction, giving the craft a natural tendency to counterrotate, and rotate the other way. source/image(PrtSc):
https://ift.tt/2SREHpA