Question about Toys
Will only spin in circles & won't fly
Posted by Anonymous on
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Posted on Jan 02, 2017
Make sure you used the right blades, the top and bottom blades are different parts and if you try to replace an upper blade with a lower blade it will mess up the flight. The two sets of blades are reversed, the leading edge is on the opposite side because they spin in opposite directions.
If you are sure you have the correct blades, try to eliminate vibrations, especially in the upper rotor. Vibrations can throw off the gyro sensor and cause the helicopter to spin. If it isn't vibrating then you need to adjust the trim. If it is just a slight spin, you can try using the horizontal trim adjustment on the left stick. If this is not able to correct the spin, set the horizontal trim on the left stick to center and then remove the plastic canopy. On the circuit board you will see two screw adjustments labeled "SENS" and "SCALE". First, draw a mark on both of them with a marker making sure to touch both the screw and the plastic or board. This mark will be used to reset the knobs to their original positions if you mess up. The "SENS" (sensitivity) knob adjusts how hard the helicopter responds to the gyro. The "SCALE" (rotor scale) adjusts the balance between the two rotors. If it is a smooth rotation (as opposed to a skittish, jumpy, or erratic rotation), you need to adjust the SCALE knob as one rotor is consistently faster than the other. On the other hand, if it is erratic and jumpy, randomly spinning in quick bursts, you should adjust the SENS knob. Erratic spinning is a result of the gyro detecting vibrations and overcompensating, throwing the helicopter in a circle. Play with these knobs, try just slight adjustments and keep going until it flies right. Have common sense, don't turn the knobs too far at once, just small adjustments will make it easier. Also if turning the knob one direction makes it worse, go the other direction. If you turn the SCALE knob too much you may lose lifting power because it will reduce the maximum power of one of the motors.
Posted on Jun 02, 2009
If its a Reflex twin rotor Heli use the trim wheel on top to counteract the spin and at least stabilize the craft at hover. Then use the right/left froward backward fans to control flight, (right joystick on the controller). These fans are not very powerful so don't expect alot from them other than turning the craft right left and reverse. Seems there is too much down draft from the rotors to effectively move the Heli forward. Not a real good design. The Sharpshooter is easier to fly but uses the batteries in the controller as a charger so they don't last real long.
Posted on Feb 15, 2010
This type of helicopter uses a fixed pitch blade. Have you recently replaced one or all the blades? If the blades are correctly positioned then once the motor comes to speed, the pitch of the blade creates enough lift to overcome the force of gravity. The problem you're having can only be that the motor is not coming to speed or the blades have been replaced but the pitch is now at the wrong angle.
Posted on May 13, 2010
If you trimmed your heli but it still can't work, try using the direction knob to trim it instead. When it goes clockwise push th knob leftwards and hold, and vise versa for anti-clockwise. Or, push and release repeatedly in the direction mentioned till it flies straight. Tested on around 6 air hogs helis and works each time. If you still can't trim you might try it after turning it off or contact the service centre.
Posted on Sep 08, 2010
SOURCE: My helicopter won't take off,
This issue is the "Drive Gear Unit" It is the small gear just above the motors which is attached to the very large gear. You will have seen several posts indicating that sometimes this gear shifts and does not engage the larger gear. In my case I looked and say that it was indeed trying to engage the larger gear, however the gear is stripped (the teeth are nearly gone). The sound that you are hearing is the sound of the gear slipping against the Bigger gear. I have a UJ365 which is a newer model. To my disappointment I cannot find a "Drive Gear Unit" anywhere on line. The copter will not function without it. This issue is that it takes the lift of both rotors to lift the copter into the air. There are two motors (one for each rotor) and each motor has one of these drive gear units. Each of these attach to the larger gears which turn the rotors. The rotors each turn in the opposite direction. This is what keeps the copter from continually turning in one direction. When one of the "main Gear Units" becomes damaged it seems to have three noticeable effects. (1) There is a noise that is the gear grinding against the bigger gear. (2) Because many of the teeth are stripped the drive gear engages the bigger bear only some of the time, this causes the rotor to turn slower and in-turn causes there not to be enough lift from the rotors to lift the copter. And finally (3), someone noted that copter wants to spin in one direction. Understanding the above, you can now understand that if one of the rotors is not reaching its full potential to turn, it is also not reaching its full potential to counter act the other fully functioning rotor. Thus the fully functioning rotor is forcing the copter to spin in its direction and the malfunctioning rotor is not spinning fast enough to stop the spin.
So this is the answer to your questions, hopefully on the older models there will be parts available for you to replace it. The copter cannot work until the part is replaced.
Posted on Jul 11, 2011
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