APM Tricopter issues, plz help???

Hello guys, This is my first post here and I am hoping to find some help with an APM I bought. The specific model of APM I bought can be found here Micro HKPilot. So let me begin by saying this is my first APM build and am very dumbfounded about this issue.  The yaw motor is acting up, it powers on at around 50% throttle well the two front motors power on at around 10% throttle. When the multirotor has enough power to lift off at around 65% throttle, it is not stable at all. I have tried switching the motor, ESC, and servo but still the issue persist. any advice would be much appreciated.

Thanks

Mathew 

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  • Moderator

    Sounds like your yaw ESC or channel is not calibrated the same as the others, all the motors should all start up at exactly the same time otherwise something is wrong, don't try fly until this is fixed. A log and a photo or diagram of how you've wired it up can also help us diagnose.

    • I was thinking the same thing, I have it in peaces at the moment, was gonna do a mini quad for the time being just to get more familiar with this FC, I also just remembered I had not updated the firmware on the ESC and they are new, so that might be the issue. What is the name of the preference for timing in mission planner? Also I can post mission planner settings but I don't know if that will be helpful. Will update tomorrow after a test flight with a 4 motor layout.

      • also straight forward wiring, all ESC only have signal going to FC, power is taped from battery for FC threw BEC. and just a split cable from bat to all ESC, tested with voltage meter all fine. servo powered from all three ESC power out in parallel.

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