Align 3GX and Open9x Cyclic Pitch

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Which board (stock / gruvin9x / sky9x) are you using?
Smartieparts Rev 2.3. 

What is your open9x FW version?
r2129

What is your open9x EEPROM version?
213-0

What steps will reproduce the problem?
I'm using open9x (although I get the same result with er9x) and a trex 450 with 
align 3gx.  I bypass the gyro to setup and adjust my collective to get +/-12 
pitch using collective on CH11.  This works fine.  Then adjust cyclic pitch to 
get +/-8 pitch using swash ring. This also seems to work fine. Then after 
completing the 3gx setup and back in gyro mode, collective pitch is still fine 
but cyclic pitch is incorrect.  L/R Ail or Ele will take the servo the full 
range making pitch 17 deg+  And it behaves strange, like it quickly gets me to 
the 8 deg or so but if you hold the stick all the way it slowly takes the servo 
to the end point

What is the expected output? What do you see instead?
Cyclic pitch to work smoothly to my limits like it does for collective

Please provide any additional information below.
I've tried with and w/o D/R Expo

Original issue reported on code.google.com by qm18mana...@gmail.com on 18 Apr 2013 at 11:41

[GoogleCodeExporter]

This sounds like normal gyro response, nothing to do with open9X.
 On the ground the heli can not respond to your cyclic input by actually moving, so it goes to full travel.

HH tail gyros work the same way.

I don't have a 3GX, but looking at the manual you have to set your cyclic 
travel limits there. The ones in the transmitter will adjust the rate of motion 
(like they adjust piro rate with a gyro), but not the servo travels.

Only once the heli is airborne will the swash motion be "correct". My MCPx and 
130X both do the same thing, any input to the cyclic on the ground causes the 
swash to move all the way.

Hope that helps.

Pat MacKenzie

Original comment by patrick_...@sympatico.ca on 20 Apr 2013 at 3:31

[GoogleCodeExporter]

Thanks for your answer Pat.

Off topic
---------
As I saw your question on RCG, perhaps it has been already answered, I have no 
time to read all the posts. This open9x project is closed. It's opentx now. 
Here:
https://code.google.com/p/opentx/

And instructions for checkout are here:
https://code.google.com/p/opentx/source/checkout

I will try to work soon on DSM2 pulses. Anyhow they will send us the backboard 
only tomorrow. So we will only be able to test the external module at the end 
of the week.

Original comment by bson...@gmail.com on 22 Apr 2013 at 5:54

• Changed state: Invalid