Hi -

I am beginning to test a new 10" build. My maiden flight used the default Betaflight PID's. The quad was "wobbly" in Acro mode and very unstable in both Angle and Horizon modes. This was not surprising since the default PID's assume a 5" frame.

Before I begin the tuning process, I was wondering if anyone could suggest a default set of PID's that can be used for a 10" quad?

Build specifics
Frame - 450mm polycarbonate
FC - Kakute F7 stack with Tekko32 4in1 ESC
Motors - EMAX 2213-935kV
Props - Master Airscrew 10x4.5

The Betaflight settings are in the attached JSON file

This helped me a lot:


I did the basic setup he shows there. Raising the master multiplier was ok for P and D but I-term went too high at least for my 7 inch. Quad felt stiff, like it really didn't want to do anything except fly straight and it "resisted" direction changes. But that was a good learning experience because now I know what a stiff quad feels like and how I term affects a quad.

So I just lowered the I-term a bit and that alone was enough to make direction changes smoother. And lowered filter sliders by one notch. The rest I left as shown and my 7 inch feels pretty good now.

This is a base tune I got off of a group on Facebook. I haven't tried it yet and I think you will have to do a little tweaking but it may be a nice start. 

   

Hopefully you can read it. I know its kind of blurry.