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JC13/04/2013 15:18:16
283 forum posts
53 photos

Hi folks

I,m new to Spektrum and I,m having trouble with my flying wing set up. I have turned on the elevon function and conected the servos to the aileron and elevator channels on the rx but the aileron stick movement moves the servos in elevator mode and the elevaor stick movement moves the servos in aileron mode. Any ideas on what I'm doing wrong.

Cheers JC

simon barr13/04/2013 16:45:03
1042 forum posts
16 photos

Try swapping the servo connections around....

Ben B13/04/2013 17:33:10
1421 forum posts
4 photos

What tx is it?

JC13/04/2013 18:22:28
283 forum posts
53 photos

I have swapped the connections around the TX is a new DX6I and I'm using an Orange DSM2 rx.


Tim Mackey13/04/2013 18:32:32
20920 forum posts
304 photos
15 articles

Its just a matter of finding the correct mixture of servo into sockets, and travel reversing - some experimentation is required usually!

This of course assumes you have one aileron servo in the aileron channel, and one in the elevator channel, AND you have selected the correct wing mix in the Tx root menu.

Ben B13/04/2013 18:33:31
1421 forum posts
4 photos

Yup, try reverseing the aileron.

Ben B13/04/2013 18:33:50
1421 forum posts
4 photos

Looks like you're not the first to have this problem


GrahamC13/04/2013 19:15:57
1240 forum posts
196 photos

It's not difficult to solve.

You will need to experiment with reversing the Aileron and/or Elevator channels and maybe swapping the servo leads over, but you will ALWAYS get there in the end. From your description it sounds like just one of the channels needs to be reversed.

You may find that you are unhappy with the overall movement when you have elevon mixing enabled. This is actually a feature of Spektrum gear which is designed to prevent you overdriving the servos, but it can make it difficult to get sufficient movements. However, it be worked around if needed.

If you need more movement, use the two mixes available to you. Set one of the mixes to copy some of the aileron movement into the aileron channel. The actual percentage of the mix you select will affect the overall movement. Then set the other mix to copy Elevator into elevator. Both should be set to act permanently [in otherwords not selected by one of the switches.]

As I said, hold in there becasue you will get there in the end!

Edited By GrahamC on 13/04/2013 19:16:53

Shaunie13/04/2013 20:23:10
944 forum posts
78 photos

I had this problem, the result is laughably simple, just reverse the channel that is behaving wrongly.

i.e pull in up elevator, the servo that moves down needs reversing. Obvious but somehow not intuitive.

It appears that channel reverse is the last thing applied before the data is transmitted.


JC14/04/2013 11:04:37
283 forum posts
53 photos

Thanks folks

I had tried reversing the servos but reversing only the elevator did the trick. Seems a bit strange but everything now moves as it should. Thanks for the replieslaugh


Phil Green16/04/2013 23:36:07
1555 forum posts
315 photos

Its a common mistake to think that when mixing elevator & ailerons, that the aileron signal is in opposition (one cw, one anti-cw) and the elevator is in unison (both cw or both anti-cw).

This isnt the case with a normally mounted symetrical servo layout, such as you'd have in SAS foamies etc - the aileron signal is the same direction to both servos, just like an aileron Y lead on a conventional model. The elevator signal sends each servo in the opposite rotation.

This is one of those times when the blindingly obvious is actually wrong and can lead you well up the garden path!



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