1/48 Scale EC135 RC helicopter Without Ailerons Add Optical Flow Positioning .

How to identify optical flow function?

• There is a small black dot at the bottom of the helicopter abdomen, and this device has optical flow positioning function.
• Customer comments:
• 1. Unstable helicopter flight
• 2. Unable to take off
• 3. The helicopter lights keep flashing
• 4. Sudden landing during flight (long flight time, low battery)
• The above issues are due to the low battery level and insufficient power of the helicopter. The user received the helicopter, and the helicopter battery should be fully charged before use. During flight, please do not continue flying for too long to avoid low battery causing the aircraft to land. More batteries can be prepared to extend the flying experience.After being fully charged, using it can avoid most of the problems that occur during flight.
• 5. 2 batteries were converted. Only 1 received battery .Propeller wobbles a lot .Propeller damaged.
• Normally, there will be not missing of parts, which are placed in the corner of the packaging box. If you believe that aircraft parts are lost/damaged/malfunctioning, contact seller for 45 days of free reissue.
• 6. Flying backwards/to the right is not obvious.
• Yes, most RC helicopters are like this, which is a normal situation rather than a quality issue. Flying backwards/to the right can only be slightly adjusted in direction.

Dimensions: Rotor diameter 256mm / fuselage length 257mm

• How to identify optical flow function? There is a small black dot at the bottom of the helicopter abdomen, and this device has optical flow positioning function.
• Functions: ascending, descending, forward, backward, left flying, right flying, left rotation, right rotation, route flight, brush pot and other stunt actions
• Features: easy to operate, fall-resistant, superior performance, good sense of flight experience.
• Equipped with altitude maintaining hovering function, altitude hovering does not mean that the helicopter is stationary in the air, but rather that it can maintain a relatively stable altitude for flight.
• Deficiency: there is add optical flow positioning, although there is air pressure hovering, but during the flight, the helicopter will drift slightly and wobble slightly. If users chase steady flight, they can consider higher-priced helicopters with optical flow positioning. Please know that this is a helicopter, not a four-axis, and the flight function is not as stable as the four-axis. The concept of model manufacturing is different, and the helicopter has different flight experience.
• Before use, users must first charge the battery and charge it in a timely manner during use.

Real helicopter machines VS RC helicopter

Is the performance of the helicopter as expected?

• The C187 is a better RC helicopter than a toy helicopter, initially possessing the characteristics of stable flight and easy flight. The level belongs to intermediate RC aircraft.
• In terms of price, for a helicopter priced at $110, the C187 is considered a medium RC aircraft in terms of appearance, size, and durability. For users seek HOBBY RC helicopters, the performance of C187 is not enough. It does not have the super stability, wind resistance, reverse flight, and stunt flight capabilities of a truly high-end RC helicopter. Therefore, if your budget is sufficient and you are pursuing a flying experience, it is recommended to choose a high-end RC helicopter priced above $400.
• For users who want to experience the fun of flying RC airplanes and don't want to play with ordinary RC helicopter toys that cost a few tens of dollars, C187 is one of the good choices. Equipped with preliminary 4-blade stable flight function and 4-channel flight characteristics, the difficulty level of control is very low. Our target audience for helicopters is users who pursue simple control of 4-blade RC helicopters with aileronllesss .
• If you pursue flight stability, you can also choose the classic traditional helicopter with ailerons, while the C187 RC helicopter without ailerons is not suitable. RC helicopters without ailerons have slightly lower flight stability and higher control difficulty, making them a good choice for users with good flight skills.

RC helicopter

Questions and Answers：

• Helicopters are unstable and not very suitable for combat on windy days, even in light winds.
• Is the level of wind resistance lower? Yes, the wind resistance level of helicopters is relatively weak.
• If a helicopter crashes? Normally, a plane crash does not have a significant impact on the aircraft. Users can re match the aircraft and controller, and after coding, the helicopter can resume normal flight. The body shell has good flexibility and resistance to falling, so it can usually still be used normally after falling. When an aircraft seriously crashes, it may cause the aircraft to malfunction.
• Why do helicopters and launchers (controllers) lose signals?
• The battery level of the helicopter is insufficient, which may cause the signal connection between the helicopter and the transmitter to weaken, resulting in the helicopter losing control/losing signal/not responding to commands. Before use, users must first charge the battery and charge it in a timely manner during use.