3D-X450 Inverted Flight Traning Kit(B)

How hard to learn and train inverted flight of your helicopter? Let's try the 3D-X450 Inverted Flight Training Kit. Flight your helicopter from ground under your foot, from your office, from your drawing room......
*Length: 525mm
*Width: 115mm (the width of patulous frame excluded); 585mm (the width of patulous frame included)
*Height: 125mm (the width of patulous frame excluded); 175mm (the width of patulous frame included)
*Weight: 130g (plastic); 150g (metal)
*Usage: All of 450 series helicopters

Description
As a stuff of the competition and entertainment sports, Radio-control helicopter is very beloved by the hobby fans. And 3D Inverted Flight is every hobby fans’ target. At present, the inverted flight practice is always based on experienced upright flight. That is, we should invert the helicopter in the air and make the propeller downward before the inverted flight. But while the inverted flying is carrying on or has finished, the flying directions and operation of helicopter are reverse, so it is easy to get a wrong operation and the helicopter will get out of control. And it will be no time to adjust the position of the helicopter and use the landing gear to land, which leads to a crash.
This Inverted Flight Training Kit could solve the above problem.
It includes: Fuselage with landing gear, Rotor head which can connect with helicopter rotor head, Patulous Frame (1) which is made of X long glass fiber rod with four sponge balls and Tail connected bracket.
Through a connector with a rotor axis which is connected with a 450 helicopter, it can become a landing gear which is able to land the upside-down helicopter directly. In this way, it could avoid the crash during 3D inverted flight practice. And then the hobbyists can practice inverted courses from the ground easily, such as take-off, hovering and landing.
While practicing the inverted flight, the helicopter can be inverted on the ground directly and supported by Landing Gear (4). Whereafter, take off the helicopter and practice inverted flying in the air. Land downward without righting the helicopter, and it will be supported by Landing Gear (4). Besides, the set also apply to normal takeoff. Take off without inverting the helicopter, and then invert it in the air. When the helicopter is out of control by wrong direction operation, it can land without righting its body. If it is too late to operate, Landing Gear (4) will protect the helicopter after fall.

This set contains: Landing Gear(7); Fuselage(6); Rotor Head(8) which consists of one Head of Screw(2) and two Clips of Rotor Head(11); Landing Gear on the other side(4); Landing Gear(4) fastened with the vertical tail of the inverted Fuselage(6) by screws through Joint Lever(9). There is a Threaded Hole (3) on Rotor Head (the center of propeller) (5) of 450 helicopter. The bulgy Screw (2) on the Rotor Head (8) can connect with Threaded Hole (3) which has the corresponding internal screw threads with Screw (2). The two Clips of Rotor Head (11) fasten the two rotor heads on the set.
There is a protection bracket fastened under Land Gear (4) by bandages, which broaden the scope of protection. Protection bracket consists of four Glass Fiber Rod (1) and Plastic Connective Disk (10). Irregular Connective Disk (10) has the holes which combine it with the Four Glass Fiber Rod (1) into a whole.