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08-12-2018 02:55 PM  3 years ago
Topic Vote0Post 1
Bill Hack


Rock Hill

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T rex 450
I am new to flying heli. My heli keeps spinning in a circle. How do I correct it
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08-12-2018 03:34 PM  3 years ago
Jerry K

rrKey Veteran

Houston Area

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There is something wrong in the tail. It may be set up backwards in the gyro. Give us more information about the setup. FBL? Radio? Gyro? Rudder settings? What moves when the heli nose moves left on the bench? I am short on time.
08-13-2018 06:59 AM  3 years ago
Heli Fanatix


Fountain Valley, CA

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Sadly there is no simple and quick reply.

Let’s start with this:
Tail facing us
- rotate tail CCW (simulates 450 spinning from counter torque)
- pitch slider should move towards boom
- this will let us know gyro is compensating correctly

Now fold a tail blade
- tip of tail blade points away from us
- give left rudder input on TX
- tip of blade should point left

Now looking from right side of heli
- rotate main blades CW
- tail blades should rotate CCW

Make sure your main and tail blades are oriented corrected
- leading edge [fat part] facing rotating direction first

Hope this helps. The above is for a quick reference. It’s ideal to download the Manual for the
- heli
- TX
- etc
Read it a few times, let it marinate and digest to learn what we have infront of us. In time it will make sense. Commit ourselves and be a student of the hobby so we understand the concepts.
It would be very helpful to have an experience pilot help look over the 450.
Perhaps someone can FaceTime/Video with you
Watch YouTube videos.

Good luck
08-13-2018 10:04 PM  3 years ago

rrElite Veteran


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1.) history.. is this a new build? Did it fly before? Transitioning to new radio?
2.) Radio and Model#, Is it flybarless? What Flybarless Controller?
3.) What gain setting are you using?

I would go to youtube and search for rc helicopter tail setup. This is really more than just a simple answer we can give you. I would also seek the help of a local heli guy.
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