HobbyAnt - MJX X904 RTF RC Quadcopter Lntroduction And Evaluation

MJX X904 with reverse power design, because of the unique shape of the structure, the use of inverted design of the motor and fan, the use of reverse power, the same can easily control, built-in six-axis gyroscope, built-in six-axis gyroscope flight system to ensure that the aircraft The stability of the stability and stability of the flight and hover, so that the aircraft in flight can be more stable shooting.

MJX X904 Transmitter high and low speed switch, remote control using second gear speed mode, according to their own control situation to switch to vulgar and high speed, the degree of increase in turn, beginners and professionals are optional .2.4GHz wireless technology, fast response, Ability, 2.4GHz is the use of specific frequency band, if you want to convert into the familiar MHz, then it is 2400MHz, so also known as high frequency, in general, is not caused by the same frequency interference, and 2.4GHz band put dry But also the first to achieve results .2.4GHz has a great advantage, even in the same space there are other people in the flight does not need to determine the frequency, that is not the same frequency interference problems, do not need to crystal exchange Cumbersome frequency change action.

MJX X904 with a key 3D roll, the aircraft flew to more than 3 meters after the height, press the normal mode / tumbling mode key to switch the roll mode, the throttle speed up, followed by the remote joystick forward / backward or left / Right side of the fly in any direction to play in the end, and then quickly back to this time, the aircraft can achieve the corresponding direction of the rocker rolling action.Every time to complete the rolling action need to push the original height and then push the throttle , And pause for 2 seconds before completing the second rollover action.

   

HobbyAnt-Product evaluation:WLtoys V922 RC Helicopter

Wltoys v922 rc helicopter appearance, head cover red-based. The overall body design with the 911 is almost the same; tail rod, tail rotor with the tail hood are exactly the same with the 911. Base material is softer, the tail motor with 911 the main motor a bit like the main motor should be a brush, turn the wing, the resistance is great, the interval is great.

Wltoys v922 rc helicopter steering gear is really semi-open semi-bare for a straight steering gear. Its role I guess is to save space and save costs, in fact, all aspects of the aircraft components are made of low-quality plastic, hood and base are very very soft (head hood end of the bayonet deformation), tail It is only a piece of flexible plastic sheet that can be bent. The main material should be plastic.

Wltoys v922 remote control is large, if I want to use the index finger plus thumb to hold the two joystick inward (switch direction) to the end, will be more difficult.
It is worth mentioning that this control has a let me shine function, that is, anytime, anywhere easy to switch four ways. In the top of the key to open a relatively heavy slider, engraved L with R, pull about you can switch left and right throttle stick. There are two kinds of throttle sticks in my chart (see the throttle stick position). And then turn on the control, press the button will be able to switch the hands of the United States hand with Japan; the back of a simulator interface. I never play the simulator, so do not introduce the battery cover is directly open, 4 * 5 electricity; charger with the battery connection, which must be inserted two wires Caixing. Charger is just above the two openings like 911 charger (in fact, the opening is not the same), but in 922 seemingly completely useless; spare parts to the main tail rotor, Phillips screwdriver, mini hexagon with some connecting rod Ah helm arm ah what ah. Quality is more times; the battery is full or not connected to the battery green light; before the flight is the first open control, then the power, and then the green light flash, the body has been issued a light and harsh voice, intermittent in the telegraph. When the power of the main paddle and steering machine will be fretting, but will not issue a self-test the end of the sound, get me do not know how long to wait. It is estimated that wait until the green light continued it.

Wltoys v922 rc helicopter-The body of the helicopter is very light and very light in relation to the torque of the main paddle. So take the time to throttle a little push, the fuselage will be in place immediately spin, and finally lose stability directly lead to the main paddle hit, take off failed. So take the time to use the most slow speed to push the throttle, until the tail motor to force the putter take off; In fact, Wltoys v922 rc helicopter gyroscope is very focused on the power when the position, so whenever the fuselage in the non-smooth The state of the power, will lead to gyroscope offset, take off when the main paddle hit, take off the failure; normal mode flight should be no problem; pitch curve, throttle curve, gyroscope all adjustable. Remote control function is more than the toy control more than two twist switch, and then you can wantonly switch four ways. The appearance of slightly the atmosphere; the main motor output is very strange. Stable hover after pushing the throttle, slow speed. The sound of the throttle sound. It is estimated that the normal mode of the main push by pushing the pitch; the main motor is a brush motor, caliber than 911 large.

Wltoys v922 with Wltoys 911 common advantages, that is, fried. Today in the living room test flight, due to the relatively slow feel up one did not adapt, the main paddle hit the ground ah ah ah on the sofa on the treadmill, the results are nothing. The maximum is to pull off the control re-calibration gyroscope with the steering gear, throttle slowly push and take off. This should be attributed to the low power of the main motor.

HobbyAnt - Hubsan X4 H107C RC Quadcopter RTF

Hubsan x4 h107c quadcopter without real-time video transmission function,and its video module is also different with the H107D,the aircraft module has a Micro-SD card slot,used to store aerial recording video use.hubsan x4 h107c drone also designed with a wrestling soft corner pad.

Before the flight,the player needs to manually press the switch,if the inside of the light from the blue light to red flashing,that has begun to video.After the flight,press this button to save the video before you can power off and remove the Micro-SD card.

Hubsan x4 h107c plus can support more than 100 meters of control distance,or because the visual can not see the aircraft,causing the aircraft to fall off high altitude.But the good Habson H107C aircraft strong enough,although the damage of a number of blades,and the protection ring also crashed,but the body of the hard damage is still not very large,but also normal flight.

HobbyAnt - XK K120 RTF Brushless RC Helicopter

The first time to fly XK K120, it is recommended to follow the instructions set, pitch 70 is enough. Before there are X6 control K110 do not forget to give K120 another build a module, if the 3D mode or 110 80 pitch, all of a sudden can not meet the danger.

XK k120 helicopter motherboard finally flattened, and there is no before those glass glue, looked very refreshing. The new machine must check the motherboard fixing screw, do not be too loose, because the factory sponge glue above the layer of oil and paper did not peel off, the motherboard is not sticky sponge pad, just pressed on the above, the rest of their own want it. Try the next spin, run badly, should not tune well. K120 tune well, the direction of the right to death, no wind in the case can have been in place, spin optimization is very good.

The only change in the new version of the servo xk k120 rc helicopter is: more glue fixed. Very fast, can only be used to cut the gap with the knife can only be released, we do not have to tie the line ah, paste the tape and other self consolidation. I 3D fly two days 12 electric, every time the tail is not hot, really not hot! Lock tail feeling with 110 for large tail pulp after almost, are good. Just turned to the fine as K110 smooth, a little hard, power is not to say, the first is the wind resistance, 120 much better, slightly larger winds will not like 110 up and down as the channeling. Accuracy and stability than 110 good, easy to do action. Chassis and other large legs tripod are thick, but the upgrade 2S this should be. 120 new machine and the same new machine 110 in the hand to experience the highest speed under the shock, but K120 vibration smaller, no, basically no vibration, which is the difference in accuracy! Well first, I remember the bad, the other thought to add it. Yes, the appearance of 120 is also an advantage, above a set of metal and carbon fiber lines tail pipe.