QQ190 – Motors continue to accelerate even when throttle is low.


Hi QQ. I flew my QQ190 for the first time in about a year the other day. Just been sitting on the shelf. When I arm my motors and select my usual flight mode (airmode/antigravity/horizon) and go to take off, the motors start to accelerate as normal, but then keep accelerating despite my throttle position. eg: if I aim to hover, it will start to hover then very rapidly keep accelerating skywards – the only solution is to drop my throttle to 0 or disarm the motors. I literally need to let it fall to the ground. This happens in all modes (acro, etc.). Prior to this, it flew like an F-16 on rails. I have recalibrated the ESC’s a dozen times, calibrated the accelerometer and re checked all other settings (PID’s etc). In desperation, I updated to the latest Betaflight Calibri_Race 3.5.0, tuned it (without issue) to fly as previous, hoping the upgrade might somehow solve the problem, not so – issue remains. I don’t think it’s the ESC’s as they calibrate fully and successfully on all motors, the motors are pretty much just slaves – could it be the FC signal to the ESC’s?? What confuses me, is that no changes or events happened to it between successful flying and this problem – just time on the shelf. Can I replace the FC in the powercube – could that be the issue. I’m assuming they are still sold and will just slot in place in the powercube – would rather not, but I can’t think what else could be causing this. Any advice much appreciated. Cheers. Jeremy

Anonymous Answered question April 3, 2019
Anonymous 2 Comments

Sorry Anthony, just hooked up my goggles and my OSD/name/mw output hasn’t changed, nor the channel, looks as it should. Guess i don’t need to do an RC calibration again?? Or do I?

Anonymous Posted new comment April 14, 2019

The Reset should only reset the throttle calibration, your channel shouldn’t change. If it does, it should be a quick reset of your goggle channels before you are flying again.

Yes, it did only re-cal the throttle, nothing else changed – I just thought I’ve have to to a full rc recalibration, but not so. That Is really good to know, Thank You.

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