New to the forum here and this is my 1st post. I have quite a few drones sizes from 220 mm down to tiny whoops. My eyes are getting worse so I decided to get a Josh Gremlin and let FT build it for me. It arrived early this week and looked amazing. I hovered in my house and did some LOS in the back yard, I dumped it a couple times in the grass but no hard crashes. It has developed a couple of issues. It drifts back and right at a pretty fast rate. It also will spin the motors up to a higher rpm after I land. It will not go back down to my 1040 rpm idle rate unless I disarm it and re-arm. I can hover for a little bit and land, then the motors will start to spin faster all on its own before I disarm it.
After reading many other posts I thought maybe vibration in one of my ESCs was causing my drift issue. I started with #3 ESC and wrapped electrical tape around the frame to tighten it up, the double sided tape that was installed looked a little loose. Just taping up #3 ESC seemed to stop most of the rearward drift, it still pulls to the right pretty hard. Of course I tried tape on the rest of the ESCs but it still drifts to the right.
Here is everything else I have tried:
Moved the Spektrum diversity receiver off the FC and applied double sided tape between them...
Motors are calibrated, bolts tight and spin freely...
FC has current firmware, running stock PIDs...
Accelerometer calibrates fine and reacts to my manual movement of the quad in betaflight (drift goes away when flying in Acro but comes back when accelerometer is in use)...
ESCs have current firmware and are now double sided sticky taped and also wrapped in electrical tape...
My DX8G2 is set to 1500 centers, 1000 low, 2000 high, trims centered...
I have probably tried other things as well but are too many to remember. I keep leaning towards a bad accelerometer but it seems fine with manual movements in betaflight. I can't believe the FC can't take more than a couple dumps in the grass before the accelerometer goes out.
I am hoping someone else has had and fixed similar issues. I haven't even flown this more than an hour and am disappointed so far. All comments are welcome.
Steve
After reading many other posts I thought maybe vibration in one of my ESCs was causing my drift issue. I started with #3 ESC and wrapped electrical tape around the frame to tighten it up, the double sided tape that was installed looked a little loose. Just taping up #3 ESC seemed to stop most of the rearward drift, it still pulls to the right pretty hard. Of course I tried tape on the rest of the ESCs but it still drifts to the right.
Here is everything else I have tried:
Moved the Spektrum diversity receiver off the FC and applied double sided tape between them...
Motors are calibrated, bolts tight and spin freely...
FC has current firmware, running stock PIDs...
Accelerometer calibrates fine and reacts to my manual movement of the quad in betaflight (drift goes away when flying in Acro but comes back when accelerometer is in use)...
ESCs have current firmware and are now double sided sticky taped and also wrapped in electrical tape...
My DX8G2 is set to 1500 centers, 1000 low, 2000 high, trims centered...
I have probably tried other things as well but are too many to remember. I keep leaning towards a bad accelerometer but it seems fine with manual movements in betaflight. I can't believe the FC can't take more than a couple dumps in the grass before the accelerometer goes out.
I am hoping someone else has had and fixed similar issues. I haven't even flown this more than an hour and am disappointed so far. All comments are welcome.
Steve