Question about Axial Syma 9086 Helicopter

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Cannot adjust r/c helicopter rotation

I was recently given a Danbar rescue copter 3d. It rotates in the air without pulling control stick. According to the manual I "can stop the fly, use screwdriver to adjust the potentiometer on chopper circuit board lightly". The only phillips screw I can find is holding the drive gear to the bottom of the rotor shaft.

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  • Anonymous Jan 06, 2009

    I have exactly the same problem.

    Adjusting the yaw control trim on the transmitter helps; But, there is no adjustment on the circit board though there is a hole with arrows where this screw-driver adjustment is supposed to be. It is a capacitor under the opening NOT a potentiometer adjustment!!! NOT an adjustment!!!

    In my opinion; As is, it is not worth the money!!! It is worthless!!!

  • Anonymous Jan 11, 2009

    I have the same problem with the copter simply spinning around and around. However, I don't know where to look for this screw. Do I need to take the cabin off to find it?


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  • 68 Answers

You can adjust the trim under the stick on the transmitter and/or the trim screw on the helicopter. If this is still not enough the motors will need to replaced so power matches.

Posted on Aug 31, 2009

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SOURCE: shuttle 9094 r/c helicopter spinning on take-off

usually trim adjustments are on the controller... not on the vehicle itself.
a potentiometer os a fancy word for dial adjustment. It wont be a metal screw, but probably a metal square with a plastic looking slot that can be turned. usually white or blue plastic

Posted on Dec 22, 2008

  • 748 Answers

SOURCE: my rc helicopter can not fly it spin in floor

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

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SOURCE: i just bought a knight hawk helicopter flew it a

k tell someone from the store

Posted on Dec 25, 2010

  • 1 Answer

SOURCE: right out of the box

When the controller flashes, it means that it has not paired up the signal with the helicopter. Move the accelerator control (left stick) up and down quickly several times. The rotors should start to turn signalling that they are paired. Max out the stick forward and back quickly.

Posted on Dec 28, 2010

  • 4 Answers

SOURCE: Hi, My copter crashed and


Posted on Dec 31, 2010

  • 2 Answers

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Posted on Jan 02, 2017

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1 Answer

Copter of air hog flew fine initially but after that top 2 out of 3 do not fly but for few turns on pressing the launch button.On pressing the throttle the bottom wing would fly in anticlock direction

gyro working ok other wise ?
see this link for answers
Air Hogs support

thought the two blades top blades were rotation opposed on that

something like
the drive cog stripped
or rotor blade bent or other cause

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Helicopter charger and batteries in remote ok, chopper won't fly

Is the "flight light" blinking on the copter? If you connect the USB cable to the copter will it power up? Have you tried different batteries in the remote? Check the pins in the charging port on the copter, Otherwise there's not a lot that can be done with these little RCs.

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1 Answer

Where do i put the blades

Its actually quite simple if you follow what I say. I am assuming that you removed them all and forget where they go.
Usually, the two front rotors are a lighter colour, but opposite in pitch/rotation.
What you must not forget is that all propellers must only try and pull upwards, that is blow air downwards.
Then power the model without props and make each motor run (or all 4 together without any props. Note on a piece of paper the direction of rotation of each motor, mark front at the right place on the paper!
Now look at each light coloured props, they should be opposite handed, imagine them turning in the direction of each front motor and pulling upwards. Put each one on the front motors as you think they should go.
Switch on the copter, link the remote control, hold model firmly and make motors turn. Both motors should blow air downwards. If the opposite, swap them. Test again.
Do the same for the rear motors.
Do not forget that the colours are only to help with finding the front when flying, otherwise the pair of propellers at the front are the same as the ones at the you can place the coloured pair you like for the front or the back, where you wish to have them.
I hope this helps.
By the way, the motors are often sold as four, each one with its own position, but in fact the motors are either turning CW or CCW.
I have not ever tried reversing polarity, as this might possibly damage a motor if they are don't try that unless you KNOW its OK.....
Someone here may already know for certain....

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1 Answer

She won't fly ?

First thing is to read manuals. A lot of RC's you have to bind or connect signals of the receiver and hand held controller. This is called binding. You always turn on radio first and then the RC. To bind there might be a button recessed in the receiver you need to push (you might need a small tool or stick) to push it. Most of the time it will go from a flashing light to a solid green light.

Jun 01, 2014 | Syma s33 3 channel rc helicopter 2.4ghz...

1 Answer


It's difficult to determine witch trim buttons effect the props. The only way to do this is durring flight. At low power, since you are working with 4 axis, each set of 2 buttons will effect the rotational speed of 1 motor. Typicaly in this set up, the left stick will control power and yaw(up and rotation left and right), while the right stick controls direction and pitch.(forward/reverse and bank left or right) Here is what I think you need. The left side bottom butons, control horizontal control. If you take off and notice the helo going to the left(banking, not turning) click the right button to attain horizontal stability. If you notice it is going slightly forward click the bottom button on the right side of the left stick. The same can be said with the axis control on the right stick. I hope to see this aircraft on youtube, as there is a shortage of these flying stabile anywere. good luck.

Apr 22, 2013 | Toys

1 Answer

Spins counterclockwise...already adjusted trim

This problem can be especially confounding because the way the copter distributes torque on a slick floor can be a spin opposite to what you see in the air!

The solution is to get the machine in the air quickly and make your trim adjustment based on that. The tail rotor is very sensitive as you know so you need to be working that stick constantly to acheive trim, this is part of what flying an RC copter is all about. A four channel copter is much harder to fly but your dragonfly can prepare you for this.

Dec 24, 2010 | Jumbo RC JUMBO HELICOPTER

1 Answer

I have a nano copter blaster 3D. I have put new batteries in the remote control. When i switch the remot on I get a red light and nothing else happens. It was bought for some friends who returned it...

You have to charge the copter first. Open the cover on the remote control and plug the little cord into the bottom of the copter. Make sure the copter is turned off. Switch on the remote and you will get a green light which means it's charging. When it goes red (about 10 min) it's charged. Then uplug it, turn on the copter and fly!

Oct 10, 2010 | Toys

1 Answer

My boys have a venom micro troop transporter helicopter, serial #2650915228A. Lately, when the copter is more than 8 feet from the controller the copter dies. Is there any way to increase the range?...

The range itself is configured in the electronics and controlled by the FCC. The most common problem here is the transmitter batteries are weakening or are those clone type batteries. If you can find them, Fuji makes the best batteries for RC electronics. Good luck

Jul 08, 2010 | Venom Micro Rescue Helicopter Ready To Fly

1 Answer

Air hog havoc goes up and down just fine, no steering control

The steering control only makes the copter rotate.

But if the heli is properly balanced a right turn should get you some forward motion. A left turn should just make it spin back to the left.

Adding weight to the front of the copter will give it continuous forward motion. Then you will lose the ability to hover.

If you visit the Air Hogs website (, select "need help" and then Havoc Heli, then crash course, the video will show you how it works.

I also find that climbing makes the heli spin left and descending makes it spin right. So full right for initial startup, then a little right when climbing, and a little left when descending helps to smooth things out.

Keep in mind that this is a very small and cheap helicopter. It took me a while to get used to flying in circles to the right but with practice I have been able to get it to go somewhat where I want it to. I can take off and land from the coffee table without crashing.

Jan 15, 2010 | Air Hogs Havoc Heli Helicopters

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