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  1. Bob Smith

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    Oct 10, 2016
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    Over the past two days we've had a problem with our new Typhoon H losing throttle control with the ST16 controller. The firmware is all up to date per Yuneec web page support.


    Both times it was almost a near disaster. Lucky, some how the aircraft descended but, we had to hold the throttle stick in the downward position for several minutes waiting of the craft to respond to the throttle input. It seems like it took forever for the aircraft to finally to lower enough so we could grab it out of the sky. Not fun! I'm just glad we didn't have a fly away or worse a crash. Let us know if you've had the same experience and how you corrected the problem. I will contact Yuneec tech support tomorrow for help!
     
  2. Heath75

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    Jun 25, 2016
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    try recalibrating the st16
     
  3. Tuna

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    Location:
    UK
    On the ST-16 tap Settings -> Hardware monitor. Move both sticks up, down, left, right and check that the bar display at the bottom of the screen for J1-J4 goes to its full extent. If they don't, you have a faulty stick which can be fixed.
     
    BroVari likes this.
  4. Pilot60

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    Sep 10, 2016
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    I think the baro is drifting. Watch your altitude redings on st16. You can see it in telemetry logs also.
     
  5. Brian Mackey

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    Location:
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    if you calibrate make sure the rabbit/turtle slider, and the camera up/down slider are both in the middle of their positions.
     
  6. Donp

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    Jul 7, 2016
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    I have had this problem a number of times on my TH Pro. Very scary to say the least. I also had to just hold the stick down white knuckled until I could grab it. Other times, by throttling up a few times, seemed to get it to come down again. Always in Angle mode, with no assisted flight modes being used. That bird has been back to Yuneec twice. This last time, it came back with NO description of what they did to fix it, but after 2 flights it appears to be behaving properly. I have seen somewhere on this forum where someone did a recalibration of the ST16 which resolved some twitchy control issues. I have not done that, and not sure if that is related to this, but it sure is scary when it happens.
     
  7. Jom

    Jom

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    Jun 24, 2016
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    I had this exact same issue after updating to 2.25 and doing a hover test in the back yard after all calibrations. The baro was definitely drifting and could watch it change. That in itself should not of caused a problem since the H will go below 0 feet. When I let go the throttle stick from full down the H actually went up about 2 feet and would not come down. What finally fixed my issue is I shut GPS off and then I had full manual control and landed without an issue. There seems to be an interface between the GPS, baro and some of the controls on the st 16 which would make sense. After that episode I went to a field where I had a lot more room to fly and I flew the H normally and flew in a straight line for quite a distance and then back to me to kind of reset the compass and give the compass/accelerometer a work out. after that point the H. flew perfectly and Hovered perfectly without drifting. It also landed fine. I think my point is if you have any issue controlling the H or it gets into a funky situation try turning GPS off and see if you can gain manual control again.