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Thunder Power RC ProModeler
Iflyrc4333

Senior Heliman

Dundee, NY - USA

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I have the Trex 450 Plus DFC with the stock 3GX MR. I am using the Spektrum DX6 (the new Black one) This is not my first Heli BUT its my first Spketrum (usually use Futaba) Any way... I have gone through the set up several times and can not seem to get rid of the tail wag... I have tried gyro settings from 10 to 80 and still can not stop the wag. Am I missing " something " because I am not familiar with Spektrum ? An suggestions and or ideas appreciated.

Thanks !
Tom

Avise La Fin

09-08-2016 02:58 PM
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PilotPin

Senior Heliman

Indiana -- USA

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Is this heli one you have previously flown with no problems and then changed to spectrum . I f not then probably is a mechanical problem.

09-08-2016 05:19 PM
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Iflyrc4333

Senior Heliman

Dundee, NY - USA

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no, this is a new heli with initial set up per manuals and videos found on line. All servos are mechanically centered with no control rods connected to the servo arms..

Thanks !

Avise La Fin

09-08-2016 05:26 PM
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gmcullan

Key Veteran

Southbridge, MA

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Move the ball link in closer to the center on the tail servo. Also, make double sure that do not have any mechanical binding in the tail rotor linkage system.

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

09-08-2016 07:13 PM
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Richardmid1

rrProfessor

Leeds, England

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Make sure the gain you are adjusting in your TX is actually altering the gain in the FBL unit. Set it really low and observe how much the tail servo moves when rotating the heli back and forth by hand, now put it really high and recheck.

If it's not simply a 'gain too high' issue, check the tail pitch mechanics for smooth friction free operation by removing the linkage from the servo and moving by hand. Check the boom supports and tight.

Last, check the servo moves at least 90 degrees between full left and full right rudder, you may need to use a shorter arm if not.

60% of the time, it works every time!

09-12-2016 11:03 AM
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