Question about RC SYMA Mini Fairy Helicopter

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I crashed my my falcon x mini gyro heli.after that it became hard to control doing wide circles due to vibration on the rotor.i can't tell if it's because my rotor has a little play in it or if it's from a bent rotor.Which do you belive it is and what do I do about it

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It could be that the rotor is a little bit tilted, adjust this carefully by pushing the rotor carefully outlined to the gear drive.What you do is make it horizontal again. that could do the trick.

Posted on Dec 25, 2010

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After 3 weeks of perfect flight behavior, my S107 started rocking or pitching back and forth after a crash. The next time I flew it, it was worse, doing a circular "going down the drain" motion....


Sometimes "toilet bowl effect" or TBE can be caused by a crash.
Try this: Gently, but firmly, press (or pull?) the drive shaft down towards the body, where it comes out of the 'copter, and where it comes out of the bottom rotor and attaches to the top rotor. Also, check for any thing wrapped around the shaft. Even a single long hair or thin thread can wrap dozens of times around the shaft and impede its functionality. Balance bar blade strikes are fairly normal in crashes or out of control flying (i.e. heavy throttle trying to pull out of a drop) and not to be very concerned with, they will decrease as you become an even better pilot.
You say "now, after liftoff it just banks sharply and crashes" does it spin? Or maintain heading and just bank? TBE will often get worse, but can usually be fixed.

Charging/Battery care?
Fly. As soon as you can't keep altitude, land and turn helicopter power off. Do not drain battery fully, ever. Cool for 10 mins. Charge until light on USB charger doesn't get brighter when you unplug heli. Cool for 10 mins again. Rinse and repeat.

Please let me know if none of these solves your issue, and I'll consult my repair notes and pick a few brains, we'll figure this one out for ya!

PvT

Jul 26, 2011 | SYMA Toys industrial New Syma S107 Mini...

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So i have the syma s107 and it as flying great and everything for a few days after a few crashes it still has great lift and what not. but now the whole helicopter like rotates while fying not in a yaw...


Make sure the drive shaft is seated properly. Gently, but firmly push it down towards the body both above and below bottom rotor. Also check shaft for any hair, thread or such thing that may be wrapped around it.

Let me know if you're still having issues, and we'll dig a little deeper.

PvT

Apr 17, 2011 | SYMA Toys industrial New Syma S107 Mini...

10 Answers

My S107 does not hover very well. It moves in a large circle on its own. It isn't the trim as it doesn't spin around the axis of the rotor. It points in the same direction but slowly moves left, back,...


The upper shaft 'T' head has a broken pin in it (the part that holds the blades. You can flip the heli upside down and slightly rotate the blade housing back and forth and IT SHOULDN'T do that. Another way to instantly identify it is dislocate the rotor head links and the upper blade housing should instantly separate) It's made of plastic.

Anyway, It's also called the "T.B.E." Toilet Bowl Effect. It's not 'really' what's taking place, it's move of a cyclic issue but the effect looks like it's swirling in a toilet bowl... You need to replace the inner shaft basically on the upper rotor. They cost anywhere from $4-7.00 bucks. It took me about 2 days of researching and purchasing another one to finally figure it out. There was another website that says the balance bar is it or the gyro has gone bad; this simply isn't true.

Cheers!

Jan 05, 2011 | SYMA Toys industrial New Syma S107 Radio...

1 Answer

Hi i have a futaba gy401 gyro with a s9254 tail servo, i had a crash and since then my tail servo constantly wags from left to right every time i switch on heli, i have tried putting the gyro on another...


Hi
If you put the gyro on another helicopter and have the same problem then you'll need to replace it. I've tried repairing these in my lab but just not worth the effort. Good luck

May 02, 2010 | Toys

2 Answers

Crashed blade 400 repaired it unsure of servo settings helicopter tilts forward and tends to spin around


Try setting gain on Gyro (use small plastic screwdriver) to a straight up and down position.

Set Gyro setting in Transmitter to 75%. NOTE: before turning on helicopter, be sure to center all adjustments on transmitter

Side switch on GYRO to DS and make sure the servo is moving in correct direction. If not. reverse direction with switch on side of Gyro. You may need to reverse the controller of Rudder in settings on transmitter.

This worked for me on my Blade and using the same Gyro on a self build 450 heli.

Good luck!

Helimangler


Apr 20, 2009 | E-Flite Blade 400 3D RTF Electric Mini...

3 Answers

Heli max hicro helicopter just keeps spinning in circles


Spinning is caused by one of the main propellers rotating faster than the other. If both propellers are secured tightly to their drive shafts, the spin control knob on the remote control can be used to stop the spin. However, if one prop is slipping with respect to the other, the spin control knob will not fix the problem.
I've found that the set screws holding the propellers to the drive shafts tend to loosen after a while. If one prop is a bit loose and the other is tight, the relative slippage will cause the helicopter to spin.
To check, turn off helicopter power and manually rotate each propeller separately, watching the nylon gears in the body. If the propeller is moving and its drive shaft gear isn't, the propeller is slipping because its set screws are not applying enough pressure on the propeller's drive shaft.
Carefully tighten the set screw and the problem should be fixed. DON'T OVERTIGHTEN, or the plastic threads for the set screw will be stripped and the propeller assembly will be ruined.

Apr 10, 2009 | Max Heli- Axe CX Micro Electric Rc Mini...

10 Answers

Need blade for world tech skyhawk helicopter


Syma DragonFly 9093 or 9083 rc heli... has the same exact size tail blade... just put one on myself... works fine..

Dec 23, 2008 | Toys

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